The last real corner was the Piggly Wiggly corner, and the exchange changed the rules to screw the guy who cornered it rather than the shorts. With that kind of

The last real corner was the Piggly Wiggly corner, and the exchange changed the rules to screw the guy who cornered it rather than the shorts. With that kind of precedent, people understandably don't really try to do a proper corner any more.