[ugh]

I’m not sure those technical details matter at all.

If you ignore iTunes, Apple doesn’t do kitchen sink apps. Their apps might not have razor sharp focus (you can do a lot of different stuff with iPhoto) but in general they stick to one theme (but everything in iPhoto has something to do with photos). I’m a fan of the hypothesis that the only reason iTunes does so many different things is that it has to run on Windows. Apple might not want to ship a few different apps for Windows, they might want to keep it all together. Apple might already have split iTunes into a few different apps if they only had to run on the Mac.

The App Store doesn’t run on Windows, it doesn’t have the same problem so Apple just reverted to their default non-kitchen-sink approach.