Mike is just collecting a fat paycheck as long as he can. He knows it's only a matter of time until they give him a golden parachute. He and the rest of his cronies are just milking mother mining until they are asked to leave.
This here is the sad truth. Mike doesn't have to worry about the state of the company because he'll get paid either way. He gets paid if he stays and he gets paid if he is asked to leave. He can do whatever he wants with no personal consequences.