So your logic is that because one country is using it as promotional material and another is saying these are the options we have = won’t be possible to have a release in no other region?
Don’t get me wrong, saying “this is what’s available now” is valid, but it seems like a major assumption to assume because the game-key card is used in promotional material, and because America hasn’t offered it, that it 100% won’t happen, especially since Nintendo previously said they would not release just a game-key card for their games. Because of the prior statement and backlash, and because they haven’t said they aren’t, and because other countries can have different releases, I don’t see how it’s impossible. I feel like it could be fair to have the addition later, as evidently by the sources your provided, they haven’t said there won’t be, yet