>Please answer the question

I don't know. I have released 0 apps and own 0 apple devices. I have never used their app store, so I do not have enough information to answer. I believe that question is irrelevant because apple is providing you a platform regardless about what apps they try to get people to install.

Everybody and everything can "provide a platform" if you do enough mental gymnastics. The AWS infrastructure you do you business on 'provides a platform'. The networking devices that route customer traffic 'provide a platform', the browser API 'provides a platform', the CPU that you code runs on also 'provides a platform'. "Providing a platform" doesn't entitle someone to grab 30% of sales from a business. If I rent office space, I pay the rent which is a mostly fixed amount, I don't pay them 30% of sales from my business - Yes, not a perfect analogy, but you get the point! Grabbing 30% of sales is just unethical, but that is just my view.

Yes, it's easy to create a platform. If you don't want to give a platform 30% of your sales then don't sell things on that platform. Simple as.