Their space launch business will fail hard if the launch market doesn't pick up soon - all their investor presentations and financial forecasts assume 50 launches a year, yet the reality so far this year is only ~5 actual paid launches from external customers.
For starlink, I could imagine 75% of the world banning it simply because the network is run by a foreign company. Governments want to keep infrastructure locally owned and controlled. North America is a tiny fraction of the service area, and the only big funding sources on offer are the US government for serving rural communities, and the US government for military use worldwide.
If both those fall through, starlink will fail. If starlink fails and the launch market doesn't pick up, SpaceX will fail.
You cannot effectively ban starlink. It is unbannable, even in the most oppressive regimes. Once you get your hands on a discrete dish, it’s over. World wide WiFi.
The most you can do is execute people who talk about it or try to educate people how to connect, but word gets out eventually...
How technically feasible would it be to do this without interfering with other radio communication in that country? Are the frequencies very different?
Radio emissions can be tuned almost exactly by frequency; this is how tuning an AM/FM radio works. Most applications also have more-or-less exclusive access to their band. All of the regulation that the FCC does is mainly to prevent interference between users and fairly consider the needs of all lobbyists when allocating bands.
For starlink, I could imagine 75% of the world banning it simply because the network is run by a foreign company. Governments want to keep infrastructure locally owned and controlled. North America is a tiny fraction of the service area, and the only big funding sources on offer are the US government for serving rural communities, and the US government for military use worldwide.
If both those fall through, starlink will fail. If starlink fails and the launch market doesn't pick up, SpaceX will fail.