Why are people blaming Nintendo? Blame the scalpers. Even with a one per person limit there will always be people buying and putting it directly on eBay. Nature of the game when it comes to collectables and no matter how many Nintendo prints it will still be the case.
Nintendo controls the supply.
ANY market with demand greater than supply will have reselling.
No, it is not true that no matter how many Nintendo prints it will always be the case. That would violate every single law of Economics known to man. Scalpers don't have market power. They bank and require undersupply.