Do you not understand that a search engine is not a business by itself? I'm struggling to understand why so many supposedly smart people don't seem to grasp the obvious fact that Google can only exist in the current form or not at all and that any viable business of the same form has to look the same. Chrome is not a self standing viable business. YouTube is definitely not one either. Ads only works because the search engine exists. The search engine without ads would be a money pit. It's a synergistic business.