> It's completely inacceptable that a single company holds the sole power to access such a widespread platform.

Why? What about Apple's practice is unacceptable?

What is the difference between Apple's behavior and how Nintendo or Sony run their platforms?

Personally, I do not want another store outside of Apple's because I value the review process. Compare Apple's app store to the Microsoft Windows Store. The relative quality of apps on Apple's store is significantly higher than on Windows Store.