

I had a similarly high opinion on Meego’s future at Nokia and then they suddenly went all-in on Windows Phone.
I also had a somewhat high opinion of Windows Phone before MS killed it.
No one wants to maintain an OS for any less than like 25% of the market — which pretty much only leaves room for Abdroid and iOS… and KaiOS I guess, though I don’t know how much effort the put into maintaining that. webOS and Tizen (resting place of Meego) are now pretty much only in TVs.
Nokia switched to Windows Phone in 2011, just before the N9 came out. They weren’t bought by MS until 2014.
And yes, I know about Symbian. Meego was their intended replacement for it.