Yeah, except for the Internet, jets, nuclear power, a large proportion of medical discoveries.... DARPA and NASA are fairly innovative. Governments and universities are largely responsible for most basic research and a huge proportion of the innovation. Without this basic research, the pace of innovation in the US would be much slower.
As a semiconductor device engineering manager, foreign born, trained in US, I do have to agree that a great deal of fundamental research in semiconductors was done under the support of the government. I always wonder why my home country did not do as much in fundamental research. USENET certainly is another major innovation with government sponsorship. I still remember back in 1989, I was typing email in ASCII, sending them via USENET and wondering why no one in my home country ever thought of building the same thing.