"Card Giants" Visa and Mastercard face a growing threat from the rise of stablecoins. Cryptocurrencies pegged to fiat assets allow for cheaper, faster, and safer payments. With widespread adoption, they have the potential to reduce the market share and fee income of traditional systems, undermining the foundations of the business. To avoid being displaced, card issuers have already started to adapt. Visa and JPMorgan are launching their own stablecoins, enabling their use in existing payment networks. Others, including Mastercard, are partnering with crypto platforms to allow the use of stablecoins through familiar cards. Products linked to cryptocurrency wallets are also gaining popularity, automatically converting assets to fiat at the time of payment. Adaptation also includes integration with decentralized financial services (DeFi).