They had ZERO clue it would be this popular. Just as they had ZERO clue a Harry Potter land would create lines out the front gate. To assume anyone KNOWS how much traction something will garner is what's INSANE here.
You need proof? Look at the original plans for this land. It had everything: Mario, Luigi, Kirby, Donkey Kong, Zelda, Pokemon. Oops, now HALF of that lineup is missing! Clearly when this idea was being fleshed out they had never once thought about putting Nintendo into multiple parks. Which is pretty much the definition of them NOT KNOWING HOW POPULAR THIS ANNOUNCEMENT WOULD BE.
Honestly...