Joe Kapp seemed like a nice guy. He was more of a game manager then a big arm and ended up getting beat in the Super Bowl by KC. He ended up a free agent due to a contract snafu and no team was interested in him for over a year. Imagine a Super Bowl QB with no teams interested.
He eventually signed a big contract with the Patriots who were woeful and he did not play well. Pete Rozelle the Commissioner at the time tried to force him to sign a smaller contract and Kapp told him to get lost.
The Pats drafted JimPlunkett and when it came time for Kapp to sign he refused to sign the standard contract and walked away from the game. Several lawsuits came out in his favor and the contract structure of the game was changed.
Because of his early departure from the game he is not remembered very much, but his legal issues and determination to stand up for himself changed the game of football. Players today owe him a debt of gratitude.
It certainly was a different time, owners showing fiscal restraint, colluding against a player, and the Commissioner looking out for a poorly run franchise. And a player with balls to walk away from the game on principle.