So what happens if the satellite operator is a non us company?
So if you're a non-US company operating services in the US, you'll have to have a US subsidiary anyway and that subsidiary would be required to get the license. If you're a non-US company not doing business in the US then that's outside of regulatory jurisdiction.
Although of course since this is geostationary orbit, the point of putting it over a geographical area is to do business over that area down on Earth.
So, if it was a German company, but was doing business in the US, the US could use access to their market as leverage for a fine.
Geostationary satellites have antennae which are meant to optimize communications with ground stations in certain countries, but they can’t fly over the USA especially.