Exclusivity agreements are a form of anti-competitive behavior, because they are paying to deny their competitors access. Your turning the whole thing on it's

Exclusivity agreements are a form of anti-competitive behavior, because they are paying to deny their competitors access. Your turning the whole thing on it's head by saying they are competing for the exclusive contract. The competition is for one search engine to be better than another search engine and the user chooses the best. It's not for vendors to compete to limit other vendors access to the market.