They chose Windows for two reasons: differentiate, and make MS dependent on them, so if worst came to worst, they could count on selling to MS for a good price as MS had not other significant manufacturer but NOKIA. Very clever I would say. OK. Lets take Android love scenario. No differentiation. competing with Samsung and company, you fail, nobody will want you and nobody will buy you. If you succeed, it will still be low margins as you are cut throating with Samsung and other Asian companies. So Android would produce no buyer and would likely not give you much profits.