You cannot get a science education through internet course work. Budding scientists need the hands-on experience of doing real experiments. Most humanities courses could probably be taught on the internet. Language classes could probably be effectively taught with a mixture of in-class and on-line techniques.
It's true that science and engineering courses need hands-on work. I got a lot of that while earning an engineering degree. However, I'm not sure that can't be done outside a university.
Years ago, well before the Internet, I took a correspondence course in TV repair. I didn't want a job repairing TVs, I wanted the TV set that the students built during the course, at the expense of the Veterans Administration. I was surprised at how much "lab work" could be done with the kits the correspondence school sent me. They were well thought out, and allowed me to understand the theory behind a TV set, and to work with actual hardware.
The set worked when I built it, and I used it for many years before it gave up the ghost. By then it was obsolete and not worth repairing.
It probably helped that I already knew a lot about electrical engineering before I took the course, but I still learned a lot about TVs that I hadn't learned in my engineering courses.
This experience leads me to think that a lot of "lab courses" could in fact be taught via the internet and kits sent to the student.
However, some means would have to be available for the student to get advice and help with things that weren't clear, or didn't seem to work right.