How platforms can accept crypto in 2026 Marketplaces have always borrowed someone else's payment rails. Stripe Connect, PayPal for Marketplaces, Adyen for Platforms — every multi-vendor platform you have ever used is, underneath, paying another company to hold its sellers' money for a few days and then forward it on. The model works. It also costs a 0.5% markup on top of card fees, introduces multi-day payout delays, and leaves every platform exposed to the standing risk that the processor decides one category of seller is too risky to serve. In 2026, that math finally started shifting. Meta began paying creators directly in USDC. Western Union launched USDPT on Solana for cross-border remittances. The EU's MiCA framework opened the door for euro-denominated stablecoin payments at scale. And a generation of marketplace operators started asking the obvious question: if stablecoins move dollars on rails that settle in seconds and cost cents, what are we still paying card processors 3% for?…