Same with iOS
Apple makes a 30% cut of your app, but while Google takes a 30% cut apparently they give most if not all of this to...oddly enough...telcos? (This is still incredibly fuzzy and I know of no sources, beyond various Google claims that they get just a small administrative charge) That may explain the service difference.
Recall that there was a bit of a hoopla because Google shares customer data with app makers, because again the sale is between the app maker and the customer (which is something that very few app buyers expect or understand).
https://support.google.com/googleplay/android-developer/answ... - "Distribution partners"?