The best way I can think of describing this is like going into McDonald's and asking for a Whopper. You're not going to have a good time. You can't get whatever

The best way I can think of describing this is like going into McDonald's and asking for a Whopper. You're not going to have a good time. You can't get whatever you want. McDonald's controls everything involved with their own operation, so they get to decide what's on the menu. And competitors products are not on it. That's Apple. Google is more like the only lumberyard in the reasonable vicinity. But they'll only sell you lumber if you also buy nails, a hammer, paint, and pipe from them as well even though there are closer, cheaper, or better alternatives elsewhere for those. They're using their position to force others into deals they don't want to be in.