Payment aggregators handle an average of $1 trillion in transaction volume annually. Assuming 1% of that traffic migrates to a self-built public chain, with an on-chain fee of 0.01% instead of the traditional 3% exchange fee, just from this $10 billion transaction flow, Visa and MasterCard would lose approximately $297 million in revenue. The key point is that these payment platforms control the operation of the sorter, determining the fee standards, and have direct control over a large merchant base. This combination of transaction clearing, pricing power, and merchant relationships lays the foundation for building an independent on-chain payment ecosystem. The first major fintech giant to truly shift to an on-chain model could completely reshape the payment industry landscape.