Apple takes a 30% cut of all IAP. Google scrapes info and displays it in widgets above links to the actual content. Google charges trademark holders AdWords ransom to protect searches for their own brands. Amazon kills OSS business models by offering managed OSS services on AWS at an unbeatable cost. Amazon picks off the best performing market place categories with Amazon Basics ‘recommended’ competitors. The list go…
I feel it pertinent to point out that comments like yours help keep the status quo. Pointing out that apple is not alone in a thread trying to raise awareness about apple's practices both distracts from apple's unethical behavior and contributes to normalizing the behavior in public perception. So my question to you is: do you want to see these unethical behaviors end? or continue?
I get that it's unpleasant for developers who don't like the policy, and at some point it might have business consequences for Apple if they don't change the policy, but why is it unethical?