As a hypothetical, let's say that most jobs require a degree. Let's say that you use 50% of the stuff in your English Major throughout most of your career; you've eaten a 50% inefficiency on your college investment(essentially doubling the "price/skills" of your degree), you've lost time that you could have invested in obtaining those skills. Further, you are pressured into demanding a higher salary because of your college investment, which isn't matched by the skills you've received; so either your employer carries the burden of your inefficient education, or you do.

This is usually decided by the power dynamic between the two, and if you're a broke college student desperate for a job, you don't have much bargaining power, so you're shouldering all the burden. The worst part is, there's no way for you to fix this - there's no 2-year program that is 100% aimed towards your career goal, and there's no entry-level job for you to start at 0%(you're probably already starting at the entry-level even with your 50% degree). So you're stuck making this investment whether you want to or not.

One way to look at university is insurance - you're learning all these extra things as an insurance that you'll have a baseline of skills if you change your career. The issue is, not everyone can afford such an expensive insurance, but most people are forced to take it under our hypothetical.