Those are minor risks. The real risk Nokia has with WP is that it'll continue being a marginal platform that can't support a company with Nokia's ambitions even

Those are minor risks. The real risk Nokia has with WP is that it'll continue being a marginal platform that can't support a company with Nokia's ambitions even if they got 100% of the WP market. There is reason to believe that in the unlikely case where WP actually takes off, Nokia have real competitive advantages over other vendors. (License fees for all WP devices from mapping, a lump sum OS cost rather than per phone fees).