In addition to what the other commenter said, most of the public universities doing scientific research used to be far better funded from their states than they

In addition to what the other commenter said, most of the public universities doing scientific research used to be far better funded from their states than they are today on a cost-per-student basis. Additional administrative staff that many universities now have is often necessitated by their regulatory complexity as well as the need for generating different sources of funding. These are broad statements that do oversimplify matters, but part of the full story.