The difference is that a game with its own market power is free to distribute directly on their website and keep that 30% for themselves, whereas an IOS app is not.
If Microsoft charged every program you download 30% of gross Windows proceeds, that would be inappropriate. If Apple allowed a free tier where you get 0 marketing power but you can link from your website to the ios store for a downloadable app, and charge what you want, it would be another matter.
If Microsoft charged every program you download 30% of gross Windows proceeds, that would be inappropriate. If Apple allowed a free tier where you get 0 marketing power but you can link from your website to the ios store for a downloadable app, and charge what you want, it would be another matter.