Shopify, Stripe, and PayPal: The Commerce Infrastructure That Wins Regardless of Protocol

This analysis is part of The AI Shopping Market Map 2026, a deep dive by The Business Engineer.

Tier 2: Commerce Infrastructure
Source: The Business Engineer

While AI platforms and retailers fight over protocols and market position, infrastructure players collect a toll on every transaction. They’re the picks-and-shovels play of agentic commerce.

Shopify — “The Switzerland of AI Commerce”

Shopify partners with ALL platforms: Google, OpenAI, Microsoft, and Perplexity. Co-developed UCP with Google. Agentic Storefronts let merchants manage all AI channels from a single dashboard. Merchants are auto-enrolled in Copilot Checkout. Millions of merchants gain instant AI distribution. Strategic position: wins regardless of which protocol dominates.

Stripe — Protocol Agnostic

Co-developed ACP with OpenAI and endorsed Google’s UCP. Built delegated payment tokens—single-use, time-bound authorizations for AI agents. Partners with OpenAI, Google, and Microsoft. Strategic position: payment slice on every AI-mediated transaction.

PayPal — 430M Stored Wallets

Powers Perplexity’s Instant Buy. Partners with OpenAI, Microsoft, and Perplexity. In discussions with Google for UCP integration. 430 million users with stored payment credentials ready for frictionless agent checkout. Strategic position: instant checkout without friction.

Why Infrastructure Wins

Protocol agnostic (hedge all bets), tax on every transaction (volume = revenue), and network effects (more merchants = more agents = more data). While platforms fight, infrastructure players collect a toll on every transaction.

Read the full analysis on The Business Engineer →

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