Gibson and other pitchers of that era believed they owned the inside part of the plate. The hitter owned the outside half. Today's premadonnas want to charge the mound on the first inside and high fast ball. Get off the plate if you don't like it. Pitchers saw guys crowding the plate, he backed them off, and they didn't cry and immediately charge the mound. The game has changed.

Anybody remember when Robin Ventura charged the mound on Nolan Ryan? LOL. https://www.youtube.com/watch?v=fN16vqScM-g

Facts are stubborn things.