I'm not sure why Apple does this. They have the manpower and dollars to do it.
They REALLY need to release updates to their natives more frequently. It keeps the "what's new" aspect for their users. Waiting a year for an app update is pretty silly, especially when the competition is sooooo far ahead of app usability and features.
With it's email, photos, maps, virtual assistants, calendar, etc., Google's offers are so much better and get updated all the time. I just don't understand Apple anymore.
My only explanation is that Apple doesn't hoard user data to make money, so they don't give a flying flip about it they way Google does. Google has incentive to keep adding features that makes the user want to continue to use it. That's probably why Apple apps seem so half baked. They are just enough to get you going, but that's were it stops. It seems bizarre, because it would seem that Apple would WANT its users to use their apps exclusively, but then again, you can't take a 30% cut from the App Store doing that.