$ 20B a year is what google pays [1] + the cost of running and maintaining their engine. $20B is a 1/6th of their operating margin for very little effort. [1]

$ 20B a year is what google pays [1] + the cost of running and maintaining their engine. $20B is a 1/6th of their operating margin for very little effort. [1] this was revealed in the recent anti trust trial