The radio spectrum is far more limited, so the more people use it, the slower it should get.
> If these companies shutdown because of international competition, it's money going to the US
The ideal "free market" result of this is that the ISP lowers prices in response or improves the service, in a rational competitive market.
The question is about customer density - the ISPs + fiber works great with density in miles while Starlink works better with lower density.
So hopefully the cities get better wired and villages get better wireless at the same time.