When I was in college, there was one (only 1) student who took 6 years to graduate. Students passing by him would often mumble "7 years of college, down the drain!"
(I won't spoil the joke, google it!)
As I recall, only a small handful took 5 years. This drifting along failing to graduate seems to be a modern phenomenon.
I was class of 1986, graduated 1988 (though TBF I had a full time job in another part of the country for my last two years so taking classes was...complicated).
This is undergrads, I know of a grad student who took 13 years (and three theses he refused to submit) until they handed him a PhD and showed him the door. Obviously in his case he didn't lack brains, just had a longstanding psychological issue.
Even for those who get doctorates, outside a small number of fields (e.g. CS) there's a long, soul-killing gantlet of post docs and RAs before either a position is obtained or you give up.
(I won't spoil the joke, google it!)
As I recall, only a small handful took 5 years. This drifting along failing to graduate seems to be a modern phenomenon.