The stablecoin market share of Ethereum and TRON has declined from nearly 100% in 2021 to 85% today, with non-ETH/TRON L1s now holding $43 billion. Investors should consider the growing stablecoin presence on alternative L1s like Solana, Arbitrum, and BNB Chain, which show significant upward trends in market share and total value. This shift indicates increasing diversification and potential for these alternative ecosystems.