Starlink would have to violate international laws, via the ITU, to serve other countries. If they violate it, and the US allows it, causing the ITU to collapse

Starlink would have to violate international laws, via the ITU, to serve other countries. If they violate it, and the US allows it, causing the ITU to collapse, there’s nothing to stop foreign companies from broadcasting/jamming signals over here. There are some specific exemptions for government/military (eg GPS), but Starlink won’t help here.