How about Ubuntu One? They have Ubuntu, Windows, iOS, and Android support plus 5 GB of free storage. Mac support doesn't exist yet, but hopefully it'll be coming soon:
https://one.ubuntu.com/
The article does mention that "there are so many people pushing to get to the top in sports that 100 people are crushed for each one who breaks through." The author makes the point that it is this competition that creates the best of athletes in our society, and fosters the necessary talent to be come a good athlete.
I do think that the author misses the point when he compares producing a major league player every 10-15 years to be the same as producing a "Shakespeare" every 10-15 years. Producing a "Shakespeare" every 10-15 years is like producing the best of the best every 10-15 years. To play in the Major Leagues, you have to be one of the best, but amongst that elite group, only a select few can achieve "Shakespearean" status.
To produce a Shakespeare, Einstein, or a Michael Jordan requires some luck, and they are characters in history that will be remembered for a while. But it should be possible to cultivate a culture that can foster more talent in the academic fields.
I think the piece misses a couple key points:
1. "Physical" ownership of the file - The song file can be downloaded to any computer, including your Android phone. This gives a sense of ownership of the digital file (hopefully Amazon won't change it's policy later). iTunes is much more restrictive, and I'm sure Apple's cloud music service would be just as restrictive.
2. Android integration - IMHO, there isn't a nice music player for the Android OS yet that can sync playlists and such across your devices, but this may be it.