Professor Jonathan Zittrain is quoted in The New York Times about whether Automated Content Access Protocol (ACAP) can force search engines to pay for materials obtained from newspapers:

If ACAP is intended to be a “a cudgel to force search engines to change their business models,” writes Jonathan Zittrain, an Internet law expert ..., it “won’t be successful.” Rather, he writes, “if it takes off at all, it will likely be only with a few of its more basic features. That may well be enough for the content publishers.”