You won't believe it, but yes they can. Anyone who has spare 500 billions can buy Apple as a whole by paying every holder their value.

Apple is a company, it gets profits, it has capital, it has trademark, it has cash on their accounts. What does Dash have of all of that? It just rises because of that ponzi scheme with master nodes. When a master node gets a good real value (equivalent to a house, for example), people will start selling them and a dump will happen. People won't wait for too long. It would be smart to turn your master node to a house while you can.