And with things that can be infinitely reproduced and that have infinite supply, like content or more generally information, where making a copy costs nothing and does not restrict anybody's access to the "original", one can't even talk about property rights.

So, if you make infinitely reproducible information, in any form - an image, a text, a movie, a song, software... - freely accessible, people have even less incentive to pay for it, because the fact that they use it and copy it and distribute it, does not prevent you from accessing it anyway. In other words, they are not "stealing" anything from you.