For all of human history, we've been making music and art. And for almost all of that time, it was done for love of doing, not money. For a few hundred years, there was the patronage era, where if you were really good you could get a rich person to feed and clothe and house you while you made art. Or you traveled around giving performances for money or food or clothes or shelter. Then only in the last 100ish years ha…
It's just more likely to exist in the same way your hobby projects compete with your full time job. Lots exist as concept only. Some are half-finished but never ship. Maybe some of them get done. What could you have done if people payed you to do what you cared about?
Patronage is... a thing. Better than nothing. But obviously a weaker form of economic systematizing than a model where you pay to listen to a performance or a recording.
I mean, if you're designing a system function, do you want it to reliably tie outputs to inputs, or optionally tie outputs to inputs?
And yes, the economics matter, even considering the "love" factor. Paying for things supports the enterprise that goes into providing them. Diluting or disconnecting payment from the music is another way of saying "in order to make music, you should be spending time doing things that aren't making music."
And the problem with that is that Time is the primary ingredient that goes into making music. More time goes into making music that's "better" by any number of reward functions in listeners. You can cheat that rule a little bit at the margins with better tools or inherent talent more than a standard deviation or two above the mean, but the significance of those terms in the equation is generally less than capital-T time.
Which means diluting/disconnecting payment either limits the output of people who don't have outside resources, or limits the quality of the music produced.