This is just like any profession. No direction at you, but idk why people assume that being an artist or producer isn't a profession compared to being a doctor. There are several artsits, some good, some bad. There are several doctors too that wish to be the best.
Back to the OP, its all about how much work you put in and how much you want it. Now it may be more benefical to be a PRODUCER vs. a beatmaker (which many people confuse today....sadly) the producer will take the material he has and get all the creativty out of it. So his decission to put Mary J. Blidge vs. Mariah Carey on a hook could determin whether ot not that record sells well or sells badly.
Making beats is fun and there are a lot of talented people out there. But just like any other job people are trying to get exactly what you want. Architect, dentist, janitor etc.