You are the bad guy blocking the path on the escalator. Its honestly hilarious that you think the people trying to get by you are the bad ones. It pisses me off because I have dealt with your kind. Standing there, seeing someone trying to move up, and just pretending to ignore it by standing there. Are you honestly going to attempt to claim its not lazy to just stand there? Often times its a fatty, sometimes its an old person or just some average sized jerk. Some of us value our personal time and want to make the most of it. Hint: not by wasting time on the escalator.
BTW, there is no "trying" it. I always get past on the escalator or the road. People move if given enough of a push.