When everything is decentralized, it's going to be much harder to enforce any rules about no-crypto. For now things like social networks are cenetralized, leading to all these temptations to mine the data. It's not just government who wants youd data - it's every organization!
We're only in this present quandary because of professionally irresponsible "web 2.0 services" that siloed up user data for their own surveillance goals, creating enticing targets for governments' desires of control.