there's a difference between "non-economically viable" and "not useful". i have no problems with people losing interest in doing stuff that current market values because current market values turning people into zombies that occasionally are happy to go murder each other.

art, volunteering, social programs and plenty other activities are way more useful for civilization as a whole than almost any random job on the market. as soon as businesses start losing workers as they realize they don't need to do shitty unimportant stuff just to put bread on a table - market will finally put the right price on lots of these jobs and start paying for it adequately.