I'd argue the users benefit from having something that integrates tightly with the OS rather than an application that targets the lowest common denominator of all platforms. Qt applications always feel a bit shitty to me, I only use them if there is no alternative.
the users benefit by having an app at least. It's unlikely that apps written in the walled garden will be ported to other OSes. If they make those apps cross platform somehow, it would be the lowest common denominator in other OSes.
