now we can create a 1986 style berkeley socket, woohoo

Well, from ~275 globally distributed locations, with a decent free tier. I'm sure there's some interesting things you could do.

...all entirely controlled by a single company. Running on a proprietary closed source stack.

Pass.

You've just described every major cloud provider.

Many people deploy software containers on top of quite vanilla kubernetes distributions.

The platform that VPSes kubernetes uses run on though, all the big clouds have a proprietary one.