wouldn't the scarcity increase the value? Why would we want people to study things we don't need and not study things in high demand? I wonder what the real cos

wouldn't the scarcity increase the value? Why would we want people to study things we don't need and not study things in high demand? I wonder what the real cost is. My school does about 80:1 in diplomas:jobs every year. I got the job :) no one else did but they didn't do anything wrong. They just wasted years and money both their own and public funds.