It might have had some neat technical designs, but it is not a good idea to try and launch an OS into a maturing market, which the smartphone market clearly was by 2013.
It worked in India - it was a success. And it was a shock when Mozilla just gave it up. Giving up on an install base of hundreds of millions just when it was taking off...the US is not the only market you know ?
Sometimes you need to plough your way through the field to get the bountiful harvest - Mozilla did that and then left the harvest to burn.
Firefox made the right call, they were never going to succeed against Android. Looking at statcounter, Kai has not been able to resist it either, dropping from somewhere over 4% to under 1%, while Android sits at over 95%.
