Just to clarify, Nokia makes both hardware and software. Symbian, Maemo and hopefully it continues down the line, Meego, are all Nokia made operating systems. And Symbian kills WP7 today even if it lacks UI candy. Just compare the sales. Why in the hell would you dump billions of users who are familiar with Symbian for an OS that loses sales by the day? Also, you can google how many of those poor organisms (companies) survived in Microsoft's ecosystem.