Most people lack talent for creating such things. accordingly they will listen, spend money on music.
A person can not be able to do everything and it is absolutely not necessary. Everyone does what they can and buys or sells this or that service. This is how the world works, sometimes it is easier to pay for quality than to make oneself not qualitatively.
The music industry has a very complex pricing system for a service or product. I hope that the NEUMA project will bring clarity and transparency to the system!