(Edit: made a more formal comment closer to the root of the thread)

Why? Launching shit into space is hard as fuck and has an enormous carbon footprint. You can build A LOT of cellular infrastructure for the same cost and impact.

And building your internet infrastructure in your own territory instead of floating in space will make it a lot harder for China to shoot with their badass microwave canon.

And I'm just a common idiot, but I'd wager upgrading satellite infrastructure is going to be slightly more expensive than terrestrial infrastructure. There's a reason we're still using a lot of satellite infrastructure from the 1980s.