Maybe there could be a Harvard Lite online academy that wouldn't need any extra buildings and just a little staff, but supply very high quality courses.
Also, it could be available to English-speaking people worldwide, including places like Africa, where wider availability high-quality education could make a huge difference - wouldn't that be a win for anyone who is concerned about social justice?
A lot of these schools have been putting their content on services like Coursera for a while now. I think that’s generally a good thing, but it can’t replicate every aspect of being an on-campus student (no teaching labs for example), and I’m skeptical as to how online degrees that some schools offer (I know Penn recently started an online version of their LDS program) will be viewed the same as a traditional degree by employers