What makes you so sure it's harmful? There is hardly enough data yet at a systemic level to prove that argument.

You can maybe intuitively say (as many do) that artists not getting paid will obviously result in less incentive to create and hence less art will be created, but you see, the tricky part with complex systems like this one is that they tend to actually be counter-intuitive and respond to many feedback inflection points.

Better access to more works of art, for example, would undoubtedly lead to some people being inspired to create that otherwise would have not.