You dont need university if you are very good at what you do. Tbh if you are motivated its always 10000x better to teach yourself a skill than to go to college to learn it. But the problem is that 99% of the people will not stay motivated for 3 years every day. In College you have commitments, exams, pressure and it keeps you going because you dont want to fail but when you learn by yourself there is no pressure or commitments so it always ends up in failure as there is no direction either.
It's hard to be self taught. But it is free. And it is 10000x more effective than any college you can go to if you are motivated for it.