When I worked in academia (working for a high throughout computing research group at a large state university) we all had our own offices. I don't know if individual offices are all that common any more due to space issues at universities, but I think they're almost all shared offices or cubes at worst. I've never seen an open office plan at a University.
I work in healthcare now and share a "large" office with 3 other developers. It feels tight at times, but I still prefer it to the hot-seat style open office that was our other choice.
My only experience with an open floor plan was in academia :-) ... terrible thing, I suffered a lot and made other people suffer as well, since I'm a loud typist ... I have never understood how some people think open floor plans are a good idea for getting work done.
Stanford University is moving toward an open plan office setup when it moves its IT staff to Redwood City next year. (Professors, of course, still get offices. So do managers.) Some buildings are already open plan. This is very bad for morale, or course, and very problematic for people who work with PII or PHI. It's a good thing that there is a medical center branch on the grounds, because illnesses will go up too.
I work in healthcare now and share a "large" office with 3 other developers. It feels tight at times, but I still prefer it to the hot-seat style open office that was our other choice.