I looked into the coin-stock plans from two companies in the market.

Coinbase is issuing on the Base chain and providing trading through a DEX integrated by applications, which seems to allow non-Americans as well? After all, there are no restrictions on-chain.

Kraken has chosen to collaborate with a third party, which issues on the SOL chain, and then Kraken lists spot and futures, while it seems that Kraken itself does not restrict Chinese users.

This will indeed be beneficial for relevant public chains and DEX.