If every competitor does GEO, does anyone win?

99Visibility Research · Updated October 21, 2026 · 6 min read

Short answer

For content tactics, largely no. C-SEO Bench (NeurIPS 2025) found that as more sites adopted conversational SEO methods, overall gains decreased, which the authors called a congested, zero-sum problem. Most methods were ineffective even before competition. Access fixes and accurate facts work differently. Making your pages reachable and your facts consistent doesn't require beating a competitor, though neither guarantees a citation.

Key takeaways

C-SEO Bench found that gains from conversational SEO shrink as more competitors adopt the same methods, which the authors called congested and zero-sum.
Most content-rewriting methods in that benchmark were ineffective or harmful even with no competition at all.
A 2026 survey of 45 GEO studies also found that competition can erode individual gains.
Access fixes, such as letting retrieval bots in and serving key content without JavaScript, are not relative. Your eligibility doesn't fall when a rival fixes theirs.
Correct, consistent facts about your own brand are a target you control, not a ranking you have to win.

The short answer: content tactics cancel out, access does not

If every competitor applies the same GEO rewriting tactics, the evidence says the advantage mostly disappears. C-SEO Bench, a benchmark published at NeurIPS 2025, tested methods that rewrite a page to win citations in AI answers. The authors wrote that "as we increase the number of C-SEO adopters, the overall gains decrease, depicting a congested and zero-sum nature of the problem."

That follows from how an AI answer works. It names a handful of sources. If every candidate page uses the same trick, the trick stops separating anyone. The ranking just reshuffles.

The bigger finding came first, though. The same paper found that "most current C-SEO methods are not only largely ineffective but also frequently have a negative impact on document ranking." So the race is congested, and the tactics were weak before anyone else joined.

Access is a different kind of problem. Whether OAI-SearchBot may crawl your site, or whether your pricing exists in the raw HTML, is a yes or no question about your own pages. A competitor fixing theirs doesn't change your answer.

What the zero-sum evidence actually shows

Two sources carry the zero-sum claim, and both deserve a careful read.

C-SEO Bench tested conversational SEO methods across several model families. It found rewriting methods largely ineffective, and found that adding adopters shrank the gains. Its "traditional SEO" arm worked better, but that arm was simulated by moving the target page to position 1 in the model's context. No search index was queried. No ranking was earned.
A critical survey of 45 GEO studies (arXiv 2607.14035, July 2026) concluded that "topical relevance and context position are the most reproducible levers, generic heuristics transfer poorly, competition can erode individual gains, and citation-oriented rewrites can impair retrieval." The survey is single-author and not peer-reviewed, so treat it as a careful summary, not new data.

Both measured pages already inside the model's context. That means the zero-sum finding applies to the generation stage, where the model picks among pages it has already retrieved. It tells you little about whether your page gets retrieved in the first place.

What it means for you: copying a competitor's GEO checklist is a poor bet. You inherit tactics with weak evidence, in a contest where more players means less payoff. For more on the downside, see whether rewriting content for AI can make visibility worse.

Why access fixes and accurate facts are not a race

The levers with the strongest evidence are access levers. They work by removing blocks, and a block on your site is yours alone.

Rendering. Vercel's crawler study found that ChatGPT and Claude crawlers fetch JavaScript files but don't execute them. Content that appears only after JavaScript runs may be invisible to them. Fixing that doesn't depend on any rival.
Per-bot robots.txt rules. OpenAI documents that GPTBot governs training and OAI-SearchBot governs ChatGPT search, and that "each setting is independent of the others." A blanket AI block can remove you from ChatGPT search without anyone noticing.
Network reachability. A firewall or CDN can return 403 to a crawler that robots.txt allows. OpenAI's help page says eligibility requires both.

A minimal rule that keeps ChatGPT search access while opting out of training looks like this:

User-agent: OAI-SearchBot
Allow: /

User-agent: GPTBot
Disallow: /

Accurate facts work the same way. Stating a specific price, number or one-line definition on a fetchable page gives an engine a sentence it can quote. That's the only positive experimental signal for on-page content in the evidence base. Your pricing being right isn't scored against anyone else's pricing.

Be plain about the limit. Passing these gates buys eligibility, not selection. Nobody outside the engine controls which eligible page gets cited.

Where competition still matters

Access isn't the whole story, and the parts that remain are competitive.

Brand prominence. A study of AI search citations (arXiv 2507.05301, data from March to May 2025) found that the top 20 news sources accounted for 67.3% of citations for OpenAI models. Large, well-known brands take a big share. That's a strong association, not a lever you can pull this quarter.

Limited slots. An answer that recommends three tools still names only three. Once every contender is reachable, topical relevance and context position decide the rest. The survey ranks those as the most reproducible factors, and position is set by the retrieval system, not by you.

Third-party pages. When engines cite review sites, directories or forums instead of brand sites, being named on those pages is the route into the answer. That's competitive too, since a rival can earn the same mentions. The evidence supports an association, not a promised effect. If rivals keep showing up instead of you, start with why ChatGPT recommends competitors but not you.

The honest split: fix everything that isn't a race first, then compete where competing is unavoidable.

What to do next

Work in this order. Each step is in your control and none depends on outdoing a competitor.

Check crawler access per bot. Confirm robots.txt allows OAI-SearchBot, PerplexityBot and Claude-SearchBot, then confirm your CDN actually serves them a 200. The free AI Crawler Checker requests a page as each AI crawler and shows which ones your firewall turns away.
Diff raw HTML against the rendered page. Anything load-bearing (pricing, product names, key claims) should be in the HTML before JavaScript runs.
Remove accidental suppression. Look for stray noindex, nosnippet, max-snippet:0 or data-nosnippet inherited from a template.
Make your facts specific and consistent. State the same price, founding year and product names on every page that mentions them.
Then compete on relevance. Cover the topics your buyers ask about, and pursue mentions on the third-party pages engines already cite.

The AI SEO checklist covers each access check in detail, and the 30/60/90 day plan sequences them for a small team.

Frequently asked questions

Does the zero-sum finding mean GEO is pointless?

It means the content-rewriting tactics sold as GEO are a poor bet, because they were weak alone and weaken further as competitors adopt them. It doesn't mean nothing works. Access fixes like server-side rendering, per-bot robots.txt permission and firewall reachability have strong evidence. They decide whether your content can be considered at all, and they aren't relative to anyone else.

If my competitor fixes their crawler access, does that hurt me?

It doesn't change your eligibility. Whether a crawler can fetch your page is a fact about your site alone. It can make the final pool more crowded, since more reachable pages compete for the same few citations. That's why access is the first step rather than the whole plan. A blocked site loses every time, while a reachable site at least gets a chance.

Should I copy the GEO tactics my competitors use?

The evidence says no. C-SEO Bench found most rewriting methods ineffective or harmful, and found that gains shrink as more sites adopt them. Copying a rival means adopting weak tactics in a crowded contest. Spend that effort on checks you can verify: whether your pages render without JavaScript, whether retrieval bots get through, and whether your facts are stated clearly and consistently.

Does adding schema give me an edge over competitors?

Not for AI answers, as far as the evidence shows. Ahrefs tracked 1,885 pages adding schema and found AI Overviews citations fell 4.6%, with no major uplift on other platforms. Google says structured data isn't required for generative AI search. Every page in that study was already heavily cited, so effects on new entrants are untested. Existing markup does no harm, but it isn't a competitive lever.

Sources

This page is AI-assisted. It was written from a verified evidence base and checked against our editorial policy. Engine behaviour changes often; facts are as of October 21, 2026.