State university professors are technically "government employees." There are, of course, some absolutely brilliant academics out there.
Still you see many great professors being hired away into private industry.
Most medical schools, especially the ones you listed, are incredibly dependent on NIH funding and they'd be unrecognizable without it. Without that support (funding, but also the review process and infrastructure stuff like PubMed and the NCBI tools), very little of the prize-winning work would be possible.