Symbian has the market share. But Symbian has lost its glance due the lack of a "flashy" UI. Google (Android) has the money. But considering Google's products and services as open is an insult to the term openness in general. Apple had the hype, but it's mostly gone now, and so are the sales (see Q309 figures for reference). While Maemo has none of these factors, it does have something else: freedom and openness.

In short: Maemo has something that no one else does.

You don't have to believe in classic sagas that the good will always defeat the evil to understand that Maemo has potential. But the real question is if its potential will be utilized - and nothing else - not whether it has potential, or whether N900 will match the N95's sales. That's because those questions are either silly or less relevant to an OS' success. The N900's quantity success sales wise in America does in no possible ways determine whether Maemo as an OS will decline. Neither does America equal to the entire world, nor does N900 equal to Maemo.

If I would insult you, then it would be a sign of that I lack arguments for my opinion, which obviously isn't the case. Sorry, but I'll have to make you disappointed; I won't do what you're asking for.