A villain has a grand scheme, but not necessarily the resources to pull it off. He calls together a room full of potential investors and outlines the plan.
But these guys are businessmen, used to being pitched at, and sometimes one will stand up and announce that it sounds too risky (or that guy’s just more squeamish than the rest), and he wants out. Sometimes, so as not to risk scaring the rest, the villain will graciously allow him to leave, and remind him not to talk about it. He will ask his henchman to “show him out.” The Henchman will nod, smile, escort him from the room and kill him, thus ensuring total loyalty and secrecy for his evil plot. The rest of the time, he’ll throw the man out right there and then, usually followed by a quip to the nature of “anyone else?”. (TV Tropes)