I'm not sure what's unappealing about targeting users that can afford to always have the latest and greatest. That's effectively exactly what you're doing if you choose to Target iOS over Android.

I guess the problem is that (going by Google's target of 100m users with this feature by winter) Apple have vastly more of those users.

Considering Android apps make 15% of the money iOS apps make, perhaps it is for the best to only target devices that happen to be owned by people who spend money.

If android apps make 15% of what iPhone apps do despite having a much larger market share, what would be the point of targeting a smaller fraction of that? Even if those users are all willing to pay you're probably not going to get higher than that 15%.

The "high-end" at market on iOS is bad enough, would you want to try and fight that battle on android?

Today's "a few" is tomorrow's "everyone", this has been proven before (the original iPhone, car technology, etc.). You take the time to perfect what you build with a smaller audience and more powerful technology, and eventually there will be more people to sell it to.

The question is if you're trying to earn your living doing that can you wait long enough for "a few" to become "everyone"? There are a lot of businesses that fail because they're too early.