You have to be a complete dumbass to think amiibos are lootboxes. Your item is fucking guaranteed in a complete game. In what way is that gambling?
OT nintendo games have a limit on how much money you can spend on microtransactions a month. I believe it's due to japan law, but I see it spreading soon. Probably a regulation forcing companies to not let anyone spend, say, more than $100 on virtual currencies