When did WorldCat turn corporate?

Lately I have noticed links to corporate sites at WorldCat.org.

For instance when you look up a book tile, under the listing for that title they have a link-list for "Find a copy in the library" which will take you to a library which has that book. This is a great service, because many libraries have inter-library loans -even across the country and this is a useful service for finding those kinds of loans.

But lately I have been finding many of those links aren't to a library at all! but to a corporate site like Alibris.com; who are in the business of selling books. While I wouldn't mind if they sold advertisements on these pages in order to pay for the site, It seems deceptive to have a link to a library that really takes you to a sale site that is only interested in dropping a cookie on your computer and selling you a book.

What do you think? Is every non-profit service on the internet becoming a stooge for a corporation?