I think they're artistic, and they're pursuing what they actually love versus what's "important" and what will guarantee them a job with a big salary. Basically they don't take the second aspect into consideration at all, they only want to major on what they love.
There was an A* art student in my P16 who got that grade in her two year art project and was featured in a school gallery. Her project was a black and white photo of her tits. Nothing more, nothing less. I don't like art.
If it's digital art thats a very high paying job if it's in the field of Animation. Or Games... better to take an online course tho... don't waste money going to a university... you'll regret it later.