>>14210172Street date isn't a legal agreement, stores can break it without fear of a lawsuit. They can however piss of game companies and risk not being given future games from that company. However if the store chain is large enough, the company, in this case Nintendo, would lose too many sales if they stopped supplying to a large chain such as EB. So while stores are cautious about doing it first, if stores do start to do it then the rest will say fuck it and start selling early as well.