Right now they could still have a very good chance to buy a remarkable size of all coins ever available, which could bring them one day into a position like all the oil exporting countries who profit massively from the natural resources they literally sit on!
In theory yes, in practice they won't be even allowed to consider such option due to high risk and volatility associated to Bitcoin.
Right, but allowed by who? I agree that nobody will actually do it, even if it is an intelligent gamble, but who are these masters you speak of?