I don't feel the pressure, but I think young coaches do. If you don't win, there's so much money involved, you're gone. The game is more complicated now. Players have to learn more on offense and defense. They have to put more time into the game.
Coaches have to learn more and teach more and think more.
Players, besides the mental part, have to do more physically, get bigger and stronger in the offseason. I think every sport is almost a year-round sport now. I don't know. I can't look into the future. It seems like coaches today are going longer than they used to, though.