Except a degree is not a signal of employability.
It's a signal of adherence to the dominant social status religion of the day.
The mother who pressures her successful, happy, entrepreneur child to get a degree, while she proudly brags about her depressed, unemployed, basement-dwelling degreed child.
This is also untrue, though it's easy to see why it can appear that way sometimes.
But employment signal is not the fundamental, causal mechanism for why people buy degrees.
People go into debt and suffer boredom for years "because I have to get a job" without ever asking what it would take to get a particular job.
Again, pride for unemployed degree-holders dramatically exceeds that for successful drop-outs and opt-outs. Not even close.
It it involves a degree, no one demands any plan, or any successful outcome at all and they get praise.
They are also the only ones who every create progress and improve the lot of the herd.
Make your goals about you.
Go build the life you want, don't seek the badges that keep everyone happy.
I think it once was primarily an employment signal and status second. That became a religious belief and the social status part flipped to dominant.
Like buying a home was a good investment, that advice became religion, then ppl bought homes based on status.