Like, I see where you're going with this but music is one of those things that's actually the whole point of being alive. If all we ever do is do "useful" things ($$$) we lose our chance to actually live our lives.
we absolutely should be pursing things that are creative, beautiful, and transcendental. but.. should we expect the pursuit of the creative, beautiful, and transcendental to be a career? we should encourage everybody to do because it is inherently valuable instead of pursuing it because its a job.
In the absence of that, neurosis is certain to flourish.
So, it is not an economic matter but a matter of the psychodynamics of society. For the sake of the health of the whole, some members of the whole must be able to bring in certain vibes, patterns, states of mind, ideas, etc. And without the ability to pursue that and only that skillset, they won't be able to succeed at that. And it is required for the functioning of the whole.
It's a bit akin to the way the entire body depends on the cells that process ATP. If you eliminate all cells that serve that role, the entire body dies, even though they are a miniscule aspect of the entire operation. That is where the animating spirit comes from.
My answer is no not necessarily. One can pursue it in their free time. Whether it should be a career or not is honestly an invisible hand question (aka capitalism). I'm normally not pro invisible hand such as in the case of healthcare, but when it comes to stuff like this, I totally am.
It might be beneficial to have dedicated people to do this, but a lot can be accomplished by free time.
If we do not explicitly carve out a space for the arts and other transcendental pursuits, capitalism eats them. And then the cancer grows.
So it is a moral imperative to make it possible for SOME of us (obviously, not everyone is called to such things) to pursue these things exclusively.
*Realizing this might be confusing in context. I meant e.g. navigational instruments