I don't think anyone is serious about suggesting we get rid of intellectual property; if you're create something, there should be protections to stop people ripping off your stuff and selling it without paying you for it.
It's patents that are the problem.
Patents let you capture an idea and prevent people from creating new things.
That's not protecting something you've created; it's stifling the creative will of others, because you don't want anyone to compete with you. It's the legislative antithesis of the open market.
Notch wrote about this before too, thoughtfully: http://notch.tumblr.com/post/27751395263/on-patents
The US could happily continue to have an major IP 'exports' (however that is appropriately referred to) without patents.