Regarding Defi which does not require KYC on users, there is a possibility that anti-crypto countries will ban it. However, if the government only limits it based on site blocking, then it is still easy for everyone to use. The higher the government restrictions on certain access, the more thinkers will create applications to bypass these restrictions. The thinkers will continue to think about and develop applications to make it easier for internet users.
So I never worry about it, and crypto will continue to run normally. Nothing can stop crypto.
There is centralized finance (CEFI) though which basically will also ask KYC like the blockfi. There are many who prefer to get into CEFI because it's a legitimate company. But most of the users who are concern about privacy go to DEFI which isn't really dead. Uniswap and pancake still are very alive, I'm sure they are more of Defi platforms that are working for liquidity providers and stakers.
I've read some news about banks actually are also going to be offering the same concept but this will be a CEFI.