You still need downlinks with this. You could have some base stations run by amateurs, but that paints a target on their backs in a similar way running a Tor node already does.

As with Sealand/HavenCo and international waters/micronations more broadly. Even if no country with guns chooses to take direct action, it takes very little--if they care enough--to cut off supplies and any meaningful communications.

Does anyone remember https://wired.com/2007/01/the-pirate-bay-2/ ?

Yes, until recently I worked for one of the principals of Sealand. Small world.

It would probably be easier to leave an exit node on a barge in international waters to be honest.

and provide internet to who ? Exit node still needs ISP to connect to.

You need approval to launch satellites. Plus a stupid amount of money.

Only 11-year-old Libertarians think this way. "Circumventing sovereignty" is the surest way to destruction. Anyone who stands outside the protection of a legitimate sovereign power will be immediately destroyed by a real country. If you fly your shit out in space and declare your satellites to be independent of any flag, I am sure that they will all promptly disappear due to mysterious causes. Likewise, if you believe that you will simply move to a remote floating platform where you declare independence, you will soon discover what the U.S. Navy is for.

They will most likely be owned by a company that still under a jurisdiction on earth.

How would they get network? Ground stations would just blacklist them.

Ground stations aren't commodities. You'd need to build your own just like any existing sat network.

I agree it's a pipe dream. Launch costs are too high and nobody will approve this.