Earlier quoted context omitted.
Yes that is correct. Patents hold it back on Android. Apple just got themselves a licensing deal that apparently lets them just have it on all phones.
The iPhone is really big in Japan (it's one of the few countries where it has a higher market share than in the US) which probably makes it more worthwhile for Apple
Since it's not free for them, I assume they determined the amount of people in their key demographic that visit Japan was worth providing a stellar experience. Considering 2.7 million Americans visited last year, it was probably a bet that's paying off.
¹ Or, incidentally, people who live there but purchase phones overseas to avoid an obnoxious camera shutter sound forced on at all times.