I currently own a N9 mobile phone, witch is the successor of N900. I had a windows phone before that. And the N9 is superior to Windows phone in all aspects.
When Microsoft bought the company (Nokia) they shut down all support for the phone, including SDK, app store, music store, maps, roads and software updates.
So, just to clarify, your first 'it' meant Nokia, and the second 'it' was the N9 phone.
That's not what I was referring to, though. You and Nokia may have seen the N9 as the successor to the N900, but I certainly didn't, and I suspect the Neo900 team didn't, either.