[geysersam]

That's just your definition of "reasonable".

They provide users with an expectation of what information they will receive if they pay for the content.

The fact that this "glimpse" of the content pollutes your web searches is a search engine problem.

It would be trivial to filter sites with paywalled content. But Google refuses to let you do that. Hope someone else will come along and help with that.

[vorpalhex]

It's the search engines definition of reasonable. Don't like it? Don't let the search engine get to the content.