The reality is, there are some in our society that don't have the ability to do college level work. There's nothing wrong with that, but it is, what it is.
I have a relative who is mildly retarded. I'm sure there's some special program in place that would have "allowed" him to go to college, but to what purpose? It's not like he would have come out as a Dr. or Lawyer or even on management level that would justify the expense of taking out student loans. Instead he was set up with a job coach, that assisted him in getting a job in a restaurant, where he has worked for the last 30 years. He's a valued employee at that restaurant, he receives an occasional COL raise, and is able to support himself just fine.
I also have a son who was smack down the middle average in High School. He's always been an outdoor type who would consider a desk job to be equal to a prison sentence. For him, a college education would have been a waste of money. Instead he preferred to work in a field that allowed lots of muscle and sunshine. For him, it made more sense to sign onto an apprenticeship, learn a skill, and work his way up the ladder that way.
Not everyone is meant for college.