You make a good point, in this thread and the other, but...
If Apple's so committed to the iTunes Music store, why would they send customers to the Amazon Music store? When a customer wants to put music on their android phone, they're not going to be spending money on iTunes. They'll then find this music they purchased is available on any player they choose. Why continue to shop at iTunes when the music you get won't play on all the devices you own?
You're asking the wrong question. Apple wants to sell music to iPod/iPhone/AppleTV/Mac/PC users. The ONLY caveat they've made, is in conceding that they must support "Windows" as the dominant desktop operating system for users to sync to. Apple is using media to sell HARDWARE. If you continue to confuse this point (and loads of people do), you'll never understand why they don't do what you'd like them to do.
NOW, that said... I won't seek to convince you of this, but trust me when I say that Apple would like
nothing more than to be able to sell DRM-free media through iTunes. They tried to convince studios earlier on the DRM wouldn't work, that it is an irritant to consumers and ultimately, intrinsically flawed. Apple ended up giving in, yet providing the most flexible DRM ecosystem on the market then and now.
The studios are still trying to wind-back the clock so that Apple does not have so much power, by withholding that DRM-free right from Apple and giving it to Amazon and others. For any well-informed netizen to punish Apple for a recording industry that continues not to "get it", is ridiculous. It is the recording industry and NOT Apple who is leaving money on the table, and discouraging inter-connectivity. Even if hardware sales were NOT the issue... if iTunes Music Store were to be released on more devices than the iPhone, they would need an entirely DRM-free catalog of music. But hardware sales ARE the issue, so this will never happen. There is little business incentive. iTunes has all the bargaining power they need already.
Also, notice something else... Amazon on Android cannot download music over the cellular network (very much like iTunes WiFi store on iPhone OS). Why? --Because of the recording industry. Apple's continuing innovation is a fascinating dance to watch. They're exposing age-old problems in the system that have been long ignored due to over-complicated hardware/software in the mobile industry. Do you remember Microsoft's DRM "PlaysForSure" and how their version for mobile was called "PlayReady"? The industry has been trying so much CRAP, it must be truly aggravating for Apple to swoop in and use WiFi as a work-around for not forcing consumers to pay more for wireless music purchases. Amazon has followed suit, but I'm sure the legal dance being played would become that much MORE complicated if Apple were so stupid as to abandon its business model of pushing hardware sales, and believe... illogically... that they need to increase their liability and development costs by adding 3rd party platforms to their iTunes interoperability list.
As a note though, while there'll never be an iTunes Music Store on Android, the iTunes desktop application may find compatibility through 3rd party extensions. Software like the .NET-based "iTunes Agent", can help people sync non-DRM podcasts, iTunes Plus tracks and music ripped from CDs to 3rd party devices. Does it work with Android? Who knows.
http://ita.sourceforge.net/
~ CB