This stopped being true when Google brought Doubleclick? Google gets money from sending users to ad-laden sites. They get to double-dip. If Google _didn't_ o

This stopped being true when Google brought Doubleclick? Google gets money from sending users to ad-laden sites. They get to double-dip. If Google _didn't_ own Doubleclick etc, then there would be an incentive for them to prioritise content over content farms etc.