That is obvious, but it used to be that admission needed some tests which most people simply cannot get past. Colleges lowered the bar of entry to make more money and that caused your point 2 and as well massively lowered the quality of the education making the diplomas not very worthwhile (known exceptions are there of course). Keep the bar to entry very high and you cannot have a reason for upping prices. Get a loan when you are actually really good and otherwise don’t get in, even if your parents have billions.