Windows 10 a failure by Microsoft's own metric (theregister.co.uk): https://news.ycombinator.com/item?id=12114334

https://news.ycombinator.com/item?id=12170771

https://9to5mac.com/2016/05/25/microsoft-windows-phone-dead/

Current market share mobile OSes: https://www.netmarketshare.com/operating-system-market-share...

Optimism is fine, but after so many years...