Or fix the demand side.

Right now, megacorps are abusing colleges as a filter to weed out people who can't cope with high stress environments or keep deadlines and, even more egregious, load the cost for a lot of what used to be employer-paid on-the-job training onto the students via student loans. A "bullshit job" should not require a college degree.

In California, if an employment test is passed at different rates by different races or genders, that in itself is considered evidence of illegal discrimination. Employers use a college degree requirement as a proxy for competency that doesn’t get them sued by the state.

How would that "fix" look like? Awareness campaigns? "ban the box"?

Ban companies from requiring college degrees unless they can prove a college degree and the associated skills/knowledge are mandatory to fulfill the job.

This won't fix the problem. The older/well known colleges will still be prestigious and demand for them will not reduce.

It will fix it eventually when those new colleges build up a reputation.

It'll take time but it will fix itself.