Don't listen to random rumors to suit your cognitive bias. The changes to Amazon and BestBuy weren't Nintendo "refusing stock" to the largest retailers in the world. If you believe this, you have zero cognitive understanding of how multi-billion dollar corporations work.
Also if *anyone* was doing this, it was actually Sony who stopped having games available for pre-order/sale on Amazon until the discount was removed, this was actually a major issue for several months:
https://www.businessinsider.com/amazon-not-allowing-preorders-of-sony-games-2018-5. Conversely, Smash and Pokemon were both always orderable on Amazon with the discount.
But you seem quite entrenched in trying to justify piracy because "costs" so do whatever makes your little dopamine hits go off. Donkey Kong is trying to recoup a massive failure of a launch of the WiiU, context is important, not that you seem to care about it.