If you spend 4 years studying something, that's four years you can't spend studying something else. If it turns out that you studied the "wrong thing", you are going to be four years behind the people who took the other path. So it's not hard to see how that education program could look like a net negative.
There were people who were so into making films they'd shot music videos and such before their very first film class. Mostly these people were there for pro forma reasons -- they just wanted the piece of paper.