The x402 infrastructure is actually their Coinbase development. However, other networks, including Solana, are actively promoting the idea. Each network and stablecoin is interested in becoming the center of x402, as this will significantly strengthen the blockchain economy through TVL and transactions. The TON blockchain doesn't give a damn about any of this.

made a refund based on the results of auction x402: https://tonscan.org/tx/c1ce71b54fdcc91c418b16c580802ce0e83ec1e46865f8da074d3c53c154fd08