Then AdWords would draw the short end of the stick because their product would become commoditized. Google would still hold the same market power as before. Ad

Then AdWords would draw the short end of the stick because their product would become commoditized. Google would still hold the same market power as before. Ad quality might go down because there are multiple providers. Overall I don't see the upside. Maybe something that would make more sense is if Google was split into two or more search engines, each of them would get a copy of the current source code and data.