Crime is pretty heavily regulated on the Internet, has been for years. If that regulation had been impossible, it would not have been allowed to grow, and would have been shut down / banned.
The internet for the average person has converged to a handful of products and services.
Your point being?
People prefer centralised stuff since it takes care a lot of stuff for them. They dont actually care all that much about technology that yield decentralised outcomes. I know that may be difficult for many here to comperehend.
> people move to the next thing, thanks to the decentralization
This does not quite follow. Care to explain more? What I observe in practice is that people move from one centralized service to the next centralized service (e.g., X->BlueSky) but rarely from centralized to decentralized.
Most services aren't decentralized, but the Internet itself is decentralized, which allows to set up these independent services that can compete with each other.