> People are different all over, they're not the same, so they don't all want the same thing
You are right, but right about the wrong thing.
A few weeks ago there was a submission here on HN about a site that shows a world map with the locations of radio stations with internet streams marked, and plays one at random from a circle around the center of the map.
I spent quite a while going all over the world at random listening to what their stations were playing.
Yes, I heard a vast difference between pop stations in the United States and pop stations in Australia and pop stations in England. I heard a vast difference between pop stations in different states in the US, too.
But I also heard a lot of similarity. No matter if I was listening to random stations in Russia, or South Korea, or Nigeria, or New Zealand, or various states in the United States, I heard a lot of the same artists.
So yes, people don't all want the same thing. But it seems that in most places there are enough people who do like the same thing enough to want to listen to it along with the things that are more specific to their region.
That's all that Apple needs to get listeners. They won't become the only station for many people, but they could easily become a station that many people around the world do regularly listen to in addition to stations that focus on their regional music.