Business & finance · also called Dependency risk, Policy risk
Platform risk
Platform risk is the chance that a company you depend on, such as Google, Microsoft or Meta, changes its rules, prices or products in a way that damages your business.
An arbitrageur owns neither the advertisers nor the audience. Both belong to platforms. The feed comes from a search engine and the visitors from an ad network. Either can change the terms without negotiation.
Recent history gives concrete examples. Google moved related search for content into a new policy framework in November 2024, required the referrerAdCreative parameter from 1 November 2025, and introduced Restricted Access Features with a strike system. It removed parked domains (AdSense for Domains) as an ad surface in the search partner network on 10 February 2026, ending a monetisation model that had existed for two decades. And AI Overviews are changing how often searchers click at all.
None of these were aimed at any one company, and all of them reshaped businesses built on the old rules.
Platform risk cannot be removed, only managed: read policy change logs when they are published, keep reserves, avoid practices that live in grey areas (they are the first to be closed), hold more than one feed where possible, and do not assume this year's margin is permanent. It differs from concentration risk, which is about your own choices of dependency.
Think of it like this
It is running a kiosk inside someone else's railway station. Trade is excellent, but the station owner decides the rent, the opening hours and whether kiosks are allowed next year.
Related terms
Concentration risk
Concentration risk is the danger of depending too heavily on one feed, one traffic source, one keyword group or one account, so a single failure hurts the whole business.
Feed suspension (account termination)
A feed suspension is when the search feed owner or feed provider stops serving ads to a publisher, pausing or permanently ending its ability to earn from that feed.
AdSense for Domains (AFD)
AdSense for Domains was Google's programme for showing search ads on parked domains; Google removed parked domains as an ad surface on 10 February 2026.
RSOC policies
RSOC policies are Google's rules for the related-search unit on content pages: real standalone content, honest search terms, honest upstream ads and a fully declared ad creative.
AI Overviews
AI Overviews are AI-written summaries that Google shows at the top of some search results, answering the question directly with links to sources.
Advertiser opt-out (search partners / parked domains)
Advertiser opt-out is an advertiser's ability to stop its search ads appearing on partner sites, and in 2025 to 2026 on parked domains, outside the search engine itself.
Sources: Google AdSense Help: AdSense policy change log, Google Ads Help: Search partner network (SPN) announcements, Google AdSense Help: Policy violations in scope for Restricted Access Features (RAFs)