I am also curious about this. Can you imagine trying to curb launches by private companies? Not going to happen especially in today's politics dominated by libertarian populism
It'd be easy, actually. Getting a launch permit requires mountains of paperwork.
In the US, but there are plenty of countries near the equater that would be happy to take the business. Export controls would make it tough for SpaceX, but if there wasn’t another way to launch the demand would lead to foreign companies taking the lead.