I think Android will enter a plateau where it will dominate about 70% of all mobile phones in the world.

iPhone will only secure a 20% of all phones.

Windows Phone will secure about 5%.

Blackberry will be number 4 with around 3% of the market share.

That means 2% will be shared between Tizen, Firefox, Ubuntu, WebOS, Jolla, and probably in that order.

I always hoped the top three would be in close competition, and leave at least 10% for the rest of the contenders. But what do you know, business calls for monopolies.