I am all in on competition, but as I have rambled on about for several times on similar threads: What can possibly be the bar for success for a company with limited funds, near zero support, and trying to get a market to try something new? MS has tossed billions at WP, and is still scratching at the 10% marketshare goal.
I have watched several videos on Sailfish OS. All I can say is that it is a grid-based OS, just like Android and iOS, that has a neat organizational idea for open apps.
WP is different. BB10 is different. Ubuntu I haven't seen yet.
Sailfish, Tizen, and Firefox OS's just seem too similar. What is the appeal? It is the same basis as Andriod and iOS, just without the apps?
Combined, these OS's might cracked 2%-3% by the end of 2014 mid 2015. Would that be enough to keep a couple of them alive??