Platform risk is exposure to policy, algorithm, or economic changes controlled by an intermediary platform on which a startup relies for distribution, identity, payments, or demand.

How it works

A mobile app sold only through iOS inherits App Store review rules, commission structure, and search ranking logic. A DTC brand spending 90% of budget on one social ad network inherits CPM swings and account bans. Marketplace sellers inherit fee hikes and search placement changes.

Diligence maps revenue and acquisition by channel. High concentration triggers questions about direct channels—email lists, SEO, sales teams—and contractual terms with partners. Some risks are structural; mitigation is diversification and faster path to owned data.

Why it matters

• Founders: Board decks should show channel mix trends, not just blended CAC. Sudden policy shifts belong in risk registers.
• Investors: Platform-dependent growth can look efficient until it is not. Stress scenarios belong in investment memos.

Common mistake

Assuming good standing with a platform today guarantees tomorrow. Historical partnership warmth does not bind future product or policy teams at large platforms.

Related ideas

See platform company, paid acquisition, and channel partner diversification.