> offering an exploratory period of life that is college (socially and intellectually)
That is exactly what college is, and is supposed to be.
Many people make the mistake of thinking that college is a jobs training program, or a career readiness program - it's not. It was never intended to be. College is supposed to give someone a broader perspective, a more complex worldview, exposure to a vast array of topics and ideas, and to develop habits that are generally beneficial to any life or intellectual pursuit. That's it.
Entrepreneurship is great, and it will teach you many different things and some hard lessons as well, but it's not going to even remotely offer the same sort of experience or exposure. It's not college, you're not reading classical literature as part of a startup grind.
Also, society needs to accept that for some people, neither college, nor "starting something", is well suited or an appropriate expectation. Some people just aren't cut out for either, and there is nothing wrong with that. Some people would be better off learning a trade, or going through an apprenticeship, or being self taught, or any number of other means of learning and developing skills.