Its not a function of a modern app store; its a function of mass-producing IT administration.
For better or worse, Apple and Microsoft are moving into a world where they're managing higher-level aspects of computing, like apps. I do think this is better for most users. Its why I recommend iPad's to non-savvy users who just want to check email, surf the web, and install a few apps; they don't need to worry about peripheral crap like malware, antivirus software, etc.
These moves will more likely aliente users like ourselves. I predict open-source operating systems will matter more as mainstream OS vendors worry less about mass-producing operating systems and more about mass-producing home IT management.
