Over time, more and more people will use decentralized exchanges instead of centralized ones. But one question arises. Are decentralized exchanges truly decentralized if they comply with all regulatory requirements and do not allow users from countries on sanctions lists to access their services? It seems to me that these are far from decentralized exchanges.
In this case you don't properly understand how a decentralized exchange works. The smart contracts are decentralized, the website is not and it is a centralized user interface to the smart contracts. If you know how to interact with the smart contracts yourself, you don't need to use the website. Obviously it is much harder to use it this way, but this proves that they can't prevent you from accessing their services. Anyhow, in practical terms this is a pointless argument. Just change the VPN server that you are using to a compatible jurisdiction and this "regulatory block" is bypassed even more easily.
If Bitcoin loses its decentralization, it will be no different from Ripple or BNB. I believe that investors and institutions will then lose interest in Bitcoin.
That is why this is never going to happen.