I guess I just disagree with your basic judgement that people would be able to devote their lives to art if they couldn't afford to eat (as the art itself isn't bringing in any money). I don't think you'll be able to convince me otherwise.
Closed Minded much? Don't give up on being convinced so easily.
Your argument is with out patents and copyrights people would not produce creating outputs because they would not be able to make a living. You did admit to not reading the whole thread, but it seems you don't internalize the posts you read. The glaring counter example to you argument is the fashion industry. Its a thriving and creative business that's of no less artistic merit than sculpture or painting. As evince the Metropolitan Museum of Art has an entire wing dedicated to fashion design. In spite of the lack of IP protections, many people make a decent living, both as functionaries in large organisations and as independent sellers (take a look at etsy.com). Moreover, fashion design has its rock stars who make millions and millions despite no protection of there work.
Please read this link which supports my statements about fashion
http://www.techdirt.com/articles/20080327/002456664.shtml