Maemo isn't open source software compliant neither as the source code of the OS is not (fully) available.

if you wanna see something really ugly (and monstrously inefficient) look @ KDE4's development since openSUSE 11.0 tried to enact it.
a grotesque farce.
'nough said...

we already had an ugly discussion along what open source is or isn't and why (not) it is a good business model on the EPIC N9 anticipation thread.
the ugliness revolved around the question whether (service) companies that make (some) money around open source are making that money FROM open source or from SERVICE around o.s. or from PROPRIETARY software that runs on o.s.

to focus on the mobile phone market:

Google isn't making money from o.s.; they make the money from ads. the more mobile phones their ads display on, the more money they make; thus android is free; it is probably the least o.s. as Google has started including PROPRIETARY features in the kernel that the Linux Foundation rejected.

NOKIA... didn't make money at all with Maemo, so the whole point is moot.
@ least Maemo was closer to the o.s. model in that the kernel is open & can be altered (power kernel aso.)

Intel is obviously not making money from o.s.
Asus, Acer, Lenovo (?) and other net top manufacturer including Intel CPUs are the hope for Intel to get money out of this.
considering that the Linux Foundation has the stewardship over MeeGo pretty much guarantees its openness...

==> thus your argument is not sound

if you want to go & hunt down your meat yourself, be our guest
that should keep you busy for a while ¦-)