Google have many more ventures and customers - but Apple make a lot more per customer; some estimates [1,2,3] estimate multiple hundreds of dollars per iphone and ipad sold. Google makes what, a few dollar a year in adsense revenue?

[1] http://www.zdnet.com/blog/hardware/apple-makes-big-bucks-pro... [2] http://gigaom.com/2010/02/01/apple-makes-at-least-200-per-ip... [3] http://www.thestreet.com/story/11718458/1/heres-how-much-app...