That’s true but it’s not necessarily true. It’s easy enough to conceive of alternative ways of structuring education, and especially job training. MBAs and JDs are both of astonishingly little value compared to their cost except insofar as they enable you to get certain kinds of jobs that would be impossible or very difficult otherwise. Law schools are quite adamant that they’re not trade schools. We have an existence proof of trade schools of some kinds being sufficient to substitute for a Bachelor’s in at least one area too. Lambda School is teaching people to be web developers in well under a year. I’m sure there are other well paid jobs they or someone like them could do the same in. College isn’t necessary for work training and there are large parts where it’s currentky necessary if you want a job but it needn’t be.