We now inhabit a world where no one is encouraged or even expected to do a trade (well except for the modern slave caste: illegals). The result is lots of HS grads who should be getting an Electricians degree instead trying to do a 4 year program.
The result not only inflates tuition cost, but also leads to 'degree inflation', that is everyone now has a degree. Therefore, this amps up the arms race so a Bachelors is no longer special, thus maybe a Masters or PhD is needed.
The colleges are all too happy to force kids into a lifetime of debt to sell them useless basket weaving and gender studies degrees.