They can decide to force you to sell at a price an app but it is an abuse of power to have a look inside to be the almighty judge. To the point that here they are even leaving the app space to look at the content of the website.

Imagine if you go to IKEA store and they look into your bag to refuse everyone that has an android to accept only iphone users? Just because they can!

Or if walmart will check your sms or your facebook profile when you enter to refuse persons that support Trump. And Costco, the same with persons supporting Biden.