Right now it's all about the ads. But that wasn't always true and there's no reason to assume it will always be true in the future. They used to be all about

Right now it's all about the ads. But that wasn't always true and there's no reason to assume it will always be true in the future. They used to be all about search and sold search appliances. They still sell search appliances, in fact, you just don't hear about them because the ad revenue dwarfs it. If cars makes them more money than ads, then they'll be a car company (that also sells ads and search appliances).