That just leads to embrace/extend/extinguish

Exactly. The deal of all these platforms is that there is a fuckton of up-front costs. Hard drives. Networks. Peering. Transit. Operators. Payment. Lawyers. SREs. And so on and so forth.

The solution to this used to be that governments provide the platform. You would think this wouldn't be hard to do, since people have now shown that this can work and so it's a guaranteed money maker, or as close as you're going to get.

Yet I can't find a single initiative.

So any such rules will just make all internet platforms disappear ... and nothing.