To some extent, I think that the problem comes down to communities. If you feel like your work is your contribution to your community, and especially to specific people, your goal isn't to make money. It's to contribute. You're incentivized to make good things that people like and help people. But when it's a massive crowd of people that you don't even know, ordering your stuff from afar because it's cheaper than whatever local source, you're not really of them. You have no responsibilities towards them. It makes sense that, as a society grows, it needs either stronger ways to tie people to each other (religion, nationalism, war), or some other form of control (laws, stamps, inspectors, baeckerschupfen).