I agree with you, my argued solution to most of the problems surrounding the Internet is regulation which will create emergent conditions to incentivize decentralization. The design of the Internet got us about 90% of what we needed, but we need our government to close the final 10% of the gap to realize the full benefits of the thesis of the Internet, much like anti-trust laws are a pre-requisite to realize maximal benefits from capitalism. (Not getting into an argument about that here, it's just an analogy in this very narrow sense of regulation leading to outsized benefits.)