Right, because pirated carts and devices to play "back-ups" off various discs and memory devices were not available for Nintendo based systems. Give me a break. If you really want to control piracy, there are other ways to do it besides creating custom formats.
Who said pirating carts wasn't possible? I certainly didn't, so you'll get no 'break' from me.
Time will be when the broadest river dries
And the great cities wane and last descend
Into the dust, for all things have an end