It is concerning to me that WP seems to be dead in the water. I'd wadger that an essential duopoly in mobile platforms is harmful to most people. BB (had a phenomenal start and lost it) and WP (late to the party and then constantly confused once it got to the party) would nicely round out the mobile platform choices.
Honorable mentions go out to FirefoxOS (maybe as viable as WP?), Tizen (OK, maybe that will be in some cars or TVs), and Maemo/Meego/Sailfish (oh how I wish you would have been successful!).
Edit: I guess I forgot about Pocket PC. Maybe MSFT can be considered to be an early starter that lost the picture?
Honorable mentions go out to FirefoxOS (maybe as viable as WP?), Tizen (OK, maybe that will be in some cars or TVs), and Maemo/Meego/Sailfish (oh how I wish you would have been successful!).
Edit: I guess I forgot about Pocket PC. Maybe MSFT can be considered to be an early starter that lost the picture?