So I guess the government steps in where the free market is too stupid to step up.
The current business model in vogue in this country is greatly risk-averse and inclined towards short-term profits, so I am doubtful that they will get involved in this work in a big way anytime soon. OTOH, there are reasonable arguments that it is in our national interest to maintain some level of public support, but, as I said, reasonable people can agree or not on those points.
Necessity is the mother of invention. After Sputnik scared the bleep out of us, NASA became a necessity for The Common Defense. The Space Program has given us collateral benefits from Velcro to the Pace Maker.