From a Comment at: Why Android First is a Myth
Most of the Android buyers use the phone as a replacement for feature phones cause it’s a cheap phone thats makes calls and does SMS so even though the numbers say the market share is high the reality in a lot of places is Android is by default on these feature phone replacements and people don’t want apps.
I see this firsthand with a neighbor who was given a Samsung Galaxy S III by his employer.
He has zero curiosity about the device, has never used the Google Play Store, has turned to me to update the OS and tweak Settings, and is otherwise generally frustrated by the phone because it sometimes does things he doesn’t expect (it recently started announcing who is calling by name with a synthesized voice, something it never did before — and I couldn’t even find a Setting to turn that off!).
In short, not every Android device represents an opportunity for app or services sales. I don’t think this is true with the iPhone as it tends to attract a more technically-savvy — and higher-income — set of customers.
People can laugh at the child-like UI on the new Kindle Fire tablets, but I think Amazon understands just how few people are interested in becoming device experts and want as much hand-holding as possible. That likely accounts for the long delay in their phone development too. They need to get the UI just right.