Google's Future??

Going by the way things are moving, I feel that google would become basically an 'Ad-Selling' company, with all these Orkut, Youtube, Maps, Gmail, Maps and even docs would become less critical and non core.
google would become the destination to buy and sell ad spots in all media, TV, internet, radio, mobile, gps, publshing or where ever the content is. Thats a lot of money.
All these internet web sites would become a small channel to host their ads, would become less profitable as google would go on to host ads on other major portals like aol, myspace, mapquest or any new killer web portal that may come by. And it would not make sens developing and hosting all the data and applications, it can just get money from the others doing the job for them and happily share the revenues.