I think a lot of the new anti-intellectual property thinking is deeply flawed in that it seems to ignore a huge elephant in the room, which is that participation in the copyright regime is voluntary. If you don't like the license don't use the product. You can do this. What is happening now is that there are all sorts of compelling things floating around that were only ever produced because the producer understood that he would be able to profit off of it (because the law would stop people from being able to simply take the results of his effort without paying. Kids say "Hey I like that...but wait, I don't want to pay for it...oh, look it's digital so it's easy to take ...[insert some inexplicable leap of logic]... it must be moral to take it, too." Yeah, I think a lot of us do grow out of that, actually.
You think the Lord of the Rings movies would ever have been made without copyright law? What Kinsella is arguing is that we have no business setting up rules such that a project like that can be economically feasible. (That, I suspect, is likely because Kinsella is an anarchist. He realizes that his preferred system of government (that is, absence thereof) could not support IP; ergo, one must argue that IP is not a desired thing, cuz it sure ain't going to exist in utopia.)
It seems really poorly thought out. If you want copyright-free material, produce it! If you object to copyrighted material, don't consume it! If you're right about it being abhorrent in the digital age, then let all the abhorrers not buy it. It's so easy to just opt out.
If you buy Kinsella's argument, you don't need anything to change about the laws. Just don't participate in the copyright regime. If you really believe in his theory, the moral thing to do is boycott it all. If you say you believe in Kinsella's theory, but go ahead and copy and use stuff the author thought he was going to get paid for, it seem really, really likely to me that what you're really doing is just using intellectual blather to salve your looter conscience.