Dropping out doesn't mean they didn't already get a lot of benefit from their schooling. Just that they realized they didn't need the piece of paper and could do the rest on their own.
But especially the fundamentals is where I think most of the value of a uni degree is.
Yeah, there's a huge difference between "so-and-so left a PhD program to start a company based on his research" and "so-and-so read a web framework tutorial instead of going to college."
But especially the fundamentals is where I think most of the value of a uni degree is.