Metsämies, where did you get the sales figures of N900?. N900 is by no means a mainstream product, it's sales volume is a small fraction of total shipments.
Secondly, it is no more strongly marketed and Nokia has abandoned it totally, except being a nice test platform for Meego (just test bed, will not be supported by Nokia).
N900 has failed "ordinary users" like me. Superb HW and good OS has been spoiled with half-done apps. Core apps like calendar and email are so-so (sync issues etc.), no decent device-wide search, clumsy phone UI and last, king of crappy apps, Nokia Maps for Maemo.

Geeks and developers don't greate large volumes, who else would buy N900 now, when manufacturer has pushed it to side track?

Nokia stock is low already, since could be nice buy..maybe.