Why Not Syndicate Rights with Content?

Martin Schwimmer has asked bloglines to remove his rss feed from their service, citing copyright violations and then explaining further. This opened a can of worms as to how legal, technological, and social regulations should affect rss feeds.
I don’t know that anyone has articulated the argument in these terms. Schwimmer is a lawyer who sees a blatant violation of his copyright rights (namely, the distribution of derivative works without license). He sees a legal remedy to the problem – the email equivalent of a cease and desist letter – and it seems to have worked.
Others think Schwimmer has made a poor business decision by limiting part of his audience. They have pointed out that Schwimmer could use rss technology to limit distribution by only releasing part of what he writes (regulate through technology). (As a practical matter, this wouldn’t work well for Schwimmer because his posts are usually very short. There’s rarely a difference between the first few sentences and the entire post.)
Finally, there are those who seem to think that the availability of an rss feed indicates an implicit license to use that feed however one wants. It’s not unreasonable to arrive at this conclusion because rss feeds are only intended to be read by machines. Why would someone share machine-readable code if they didn’t expect a machine to read it? The counter argument is simply that some machines (ie non-commercial ones) should use the feeds whereas others (ie commercial ones) should not.
I think people can make their own decisions about the business value of sharing or not sharing an rss feed. My question is this: why are we offering a machine-readable syndication feed (rss feeds) without any license information? Thanks to Creative Commons, bloggers have been the first creative group to widely adopt standardized licenses for their work. These licenses are even machine readable by design! What better place is there for a license than the rss feed, the very place where license violations are likely to occur?
If the machine-readable license was embedded in the syndication platform, tools like Bloglines, kinja, and MyYahoo would have no excuse for violating the license terms. Likewise, if bloggers wanted the benefit of being aggregated by a commercial tool like kinja, they would have a reason to license their content to kinja (or commercial services in general).
If this sounds like digital rights management, that’s because it is, but there’s nothing wrong with expressing your legal rights. There is nothing limiting the use of digital rights management to give up one’s rights or to license one’s rights liberally. Social and business ideas do not have to compete with the law in this context, and the danger of over-protection by default is dealt with nicely by Creative Commons. The next step is to make use of the standardization that Creative Commons is already providing.