It's entirely possible that this state of things will continue. Google will continue to be a/the leader in online ad sales, and periodically they will try to ex

It's entirely possible that this state of things will continue. Google will continue to be a/the leader in online ad sales, and periodically they will try to expand into some other lines of business, never with any particular success. That's not the best possible place to be, but it is a good one, particularly since ad sales are so very lucrative.