Quote Originally Posted by Mirage View Post

That's entirely up to them. People can only make stages that are possible to make within the toolbox nintendo gives them. They could easily make features in their own games that are not possible to replicate in super mario maker.
That's true. But at the same time, people could also invent cool new gameplay mechanics through Mario Maker than will become well-known among the fanbase which would then stop Nintendo doing something similar in the future, or risk the accusation of theft.