It's not like they are going to make more Meego phones if it sells, they've already said this.
As for support, I do worry and I don't mean it as any form of disrespect for the countless number of people in this community who make great apps. It's just that I treat and expect from my N900 the same way I treat and expect from my Linux desktop: I know it will do things that no other OS/device will allow but I don't expect the hot new software annonced by company X to be on it, instead I sit there hoping that some kind soul with spare time will make an alternative.