Copyright and the remixable web

I'm listening to the John Battelle panel on local search at O'Reilly's Where 2.0. John Frank of Metacarta just raised the point that dhtml (aka ajax, an easy javascript technology for mixing in content into web pages from web services) enables copyright infringement, a bad thing from the perspective of the recent Supreme Court ruling on file sharing services. You're probably okay if you do not encourage stealing of copyrighted materials. I wonder if things like microformats and easy data sharing will push more and more providers into putting more liberal copyright restrictions on their work that allow for sharing.