Just curious, but that would deny many millionaires and billionaires the chance to change the world. For sure, SpaceX and Tesla probably would not exist [1].
I'm surprised that this sentiment is growing among many people that somehow they believe the Government is going to be better at experimenting and managing these types of far out projects rather than the free market.
SpaceX has probably the most advanced rockets in the world, far surpassing that of all other countries.
I am not sure I want the future of our species solely in the hands of politicians and not giving private enterprise a chance to rise up and have a shot.
If I misunderstood the gist of your post, I do apologise.
[1] I know they both have taken Government money, but both Tesla and SpaceX could not have been started by a Government politician or employee.