Google is the one pushing them. Apple has the incentive to keep people on the device though because they don't have an advertising business
How often will the hot new app from some SV startup launch for iOS first with no Android app? Resource strapped companies that have to prioritize one platform will tend to pick iOS and that hurts Android (but is obviously good for Apple)
And it's so minor compared to what Google does it's ridiculous to even compare the two.