Apple ecosystem is completely closed off. It does make it easier to ship software. For example they've hijacked SMS by creating their own iMessage, they tried to take full control of the mobile news publishing until Google came up with AMP and they have been dragging their feet when it comes to new web standards in Safari because they prefer native apps.
So the morale of the story is as long as you ship quality products you'll get a pass for tactics other companies don't usually get a pass for. None of openness, fairness, privacy, etc. matters really.