> Your main motivation should be fun and enjoyment of making the music.

It's much like brain surgery. People assume you should start out treating people's illnesses and curing them, but the successful brain surgeons know that you should spend your early years just having fun and enjoy playing around inside people's skulls. It's such a rush the first time you probe someone's central gyrus and see their arms twich. Don't waste your time planning for "in network" glory and how to calculate billable hours, just power up that bonesaw and start shredding.