I don't think we want to go back to a world where artists are funded by rich people because in that world, the rich decide what works get created.
Copyright is the only proven way of producing an abundance of art CREATED FOR THE GENERAL PUBLIC, not for the Church or some nobleman. Just look at how many books and songs we got in the 20. century. Thousands of consumers each paying a small amount is a fundamentally democratic idea.
I think it should be possible for a writer, musician or developer to make money from ACTUAL creative work -- not from concerts, book signings or t-shirts. I don't see why so many people seem to wish for a world in which a hairdresser gets paid for his work, but a composer or software developer gets nothing. Do we really want a system which rewards the creation of tangible products like tables and haircuts, but not the creation of ideas? In the 21. century? Seriously?
To those who ask "why create artificial scarcity?": For the same reason we have environmental regulations. Environmental regulations also create artificial scarcity. We make it artificially expensive to release CO2 into the air or to fish cod out of the sea above a certain limit. Why? Because this is necessary to ensure continued abundance.
Unless someone proposes a better model which enables people to make a living by creating reproducible works, I will remain a (critical) supporter of copyright. In general, I think we should strive to create a system which rewards contributions to our society.