Disagree with your reasoning. WP had a great UX. It failed because of developer support. This would even more true today. It's just very hard to compete with th

Disagree with your reasoning. WP had a great UX. It failed because of developer support. This would even more true today. It's just very hard to compete with the maturity of the mobile ecosystems Google and Apple have built. A MS phone would lack popular apps, you wouldn't be able to do mobile payments, you wouldn't be able to easily restore/backup from old devices, etc.