Everything that Elon has done has been piggybacked on the heavy lifting of the government. Most of all climate technology, space tech and the internet has been developed off their back and productionized (ie most of the technology is de-risked thanks to the fundamental research from the government).
This, frankly, unintelligent argument that the government is a waste of resources probably better represents your understanding of how difficult technology gets funded in the US. Critical word here is difficult (not some ad-tech SAS company).
FWIW the government has a ton of inefficiencies but their goal isn't to productionize something and turn it into a business.