Android is not open at all, "russian Google" - Yandex - tried to build their own android phones but vendors dropped them because google just came to them and sa

Android is not open at all, "russian Google" - Yandex - tried to build their own android phones but vendors dropped them because google just came to them and say "hey guys if you will be with them - we won't allow you to use google play on your phones at all". How it is open? i have no idea why it is open.