I didn't say it was wise. I just believe that it is the reality of the situation. We have watched Nokia throw their immense resources in every direction, from Symbian to Maemo to Meego, all resulting in failure. The pathways for Nokia to take were pretty narrow, and I think spending more time in developing yet ANOTHER platform would have been death. Nokia cut their losses here, and went with a platform they could work with. They can focus their efforts on developing killer hardware and optimizing WP7 for it. It takes the biggest weakness of Nokia (interface design and software) out of their hands. It also makes the platform more attractive for developers - with Nokia backing WP7, there's guaranteed distribution and handset sales.