[dave_b]

Business model has nothing to with anti-competitive behavior, it’s about being in the same industry / providing the same service.

[zepto]

Suppressing sites that display advertising seems like it is anticompetitive behavior against other ad networks, no?

[strbean]

Only if they targeted sites that didn't use AdSense and let sites that did use AdSense place ads wherever they wanted.

[zepto]

Since their own ads on the search results page are not targeted that is a clear yes then.