Competing with the Android/iOS duopoly was a war of attrition the Microsoft, Firefox, Canonical and Samsung (Tizen) all lost. If you don't have the resources that those companies do I have a hard time seeing how you survive, and I have no interest in investing in a platform that has an extremely high risk of being orphaned. I wish it was otherwise - earlier today I was lamenting that my Samsung Galaxy S7 is laggier and less responsive than the $100 unlocked Lumia I bought myself years ago was. But I don't see another platform succeeding here.