Developers and users generally won't care whether it's open source, I agree. Manufacturers like Samsung or Sony would though, especially after their experiences

Developers and users generally won't care whether it's open source, I agree. Manufacturers like Samsung or Sony would though, especially after their experiences with Symbian. Not because they care about freedom, but because they want to have some form of control over their own destiny. The US market was always an anomaly and under tight carrier control. There the iPhone and Android enabled choice. This is however mostly irrelevant for the EU and especially for this verdict. It's undeniable that there are now fewer choices and competitors available, and that most of the ones that are gone have been killed by Android: Windows Phone, Blackberry, Symbian, Meego, FirefoxOS, etc.