I think the intuition behind these proposed laws is that Google has become so dominant in providing the information substrate of society that it should be subject to regulation as a monopoly. The argument would be something along the lines that search works best when provided as one comprehensive resource. Therefore, as a natural monopoly it should be regulated for similar reasons that other utilities are (electricity, water). The publishers are trying to make a case that their product has value as a "public good." Classical economic theory says market forces alone will produce a sub-optimal supply of a public good with out regulation.

Something like that. It's not a totally implausible argument. It does seem notable to me that Google is able to extract value from content that the creators can't.