I have been under a rock---Is college expensive today?

Carpe Diem

Since 1978, the price of housing (red line) increased approximately 320% (3.2 times)  before "crashing" in 2007 wreaking havov on the financial system. The price of college tuition (brown line) in the same time period increased approx 920% (9.2 times)...Is it due for a crash also? If not, why not?  Can tuition increase forever? That was the thinking in the housing industry, and we know how that ended up.