That sounds wrong to me, they haven't even tapped much into their potential yet. SpaceX is still proving that they are a reliable, viable alternative to government backed space access. To my feeling they are at 1-5% of their journey.
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.
They might do space tourism. A great enabler will be their Dear Moon mission:
https://en.wikipedia.org/wiki/DearMoon_project
I can't see how individual nations can ban Starlink. A small dish antenna will be indistinguishable from the rest of dish antennas:
https://www.businessinsider.com/spacex-starlink-satellite-in...
Tell me how Starlink will smuggle dishes in the country, and how will they customers pay the subscription?
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...