Plenty of people make music for fun while having other careers. A lot of the masterpiece painters did it for passion and lived in poverty (I'm not saying that is good, but clearly a career is not necessary for great results).
Sure but most renowned artists had the time to become really skilled because they could dedicate all their time to it. If no one wants to pay humans for art any more, how will that happen?
Then become politically active and make sure we have a strong safety net with healthy labor rights that allow everyone to have ample free time. You don't ban music production software.