Before Microsoft can set its sights on what's in the windshield, they better pay attention to the rearview mirror. BlackBerry remained stagnant in growth which is a real achievement. A large French company that sells frozen foods in Europe (Picard) has announced going with BB10 and BES. Although it was a limited amount by Android or Apple standards, the Passport sold out in 2 days and 10.3 has received positive feedback.
Unless Boo-Keun Yoon or Tim Cook get caught in a kiddie porn scandal or something similar, Microsoft won't be climbing the consumer charts anytime soon. But they better get their act together in the enterprise field quick. WP is the only real challenger to BB in this area because of security, or "perceived" security. BB still commands a 60% share in the enterprise world so it's safe - for now.