All international law is effectively diplomacy (politics) that has been pre-agreed. The current status quo (as I understand it) is that the US Gov is unlikely

All international law is effectively diplomacy (politics) that has been pre-agreed. The current status quo (as I understand it) is that the US Gov is unlikely to allow a private company to breach international law by making unauthorised transmissions into another country. It would be a brave foreign policy decision for the US Gov to decide to permit that. A logical response from Russia or China (or any other nation with the capability) would be to start shooting down satellites. They would have reasonable grounds to do so, and I think it very unlikely that anyone wants to start a space war.