Not the case in US research universities where science professors bring in large grants from usually the federal government to fund machines and grad students.

Not the case in US research universities where science professors bring in large grants from usually the federal government to fund machines and grad students. The university takes an "overhead" cut of these grants of around 50%. So if a grant is $150k then the professor gets 100k to spend and the University gets $50 (and pays for buildings, electricity, admin, etc). Most studies show that the overhead the universities take is a net plus for them over the cost of the services they provide.