> I disagree. There is an implicit contract between website publishers and search engines that it’s ok to do this. The website can set nosnippet in robots if they want to not have the snippet in search results.

Who made this contract? I never signed one. If I came to your place of business and copied your content and provided it somewhere else, I would be infringing your copyright. Do I have to put up signs specifying that at my place of business? Why is this any different? My web content is not the property of someone else and by publishing my information that is in no way an implicit grant of the right to reproduce it.