And revenue sharing resulted in the most successful and profitable league in the history of American sports. Wellington's family is very wealthy because of it. He wasn't "taking one for the team."
So, if the owners agreed to that rule about Hard Knocks then Mara and Rooney don't have much choice. The NFL is a brand and Hard Knocks is a popular show. A lot of coaches and teams don't like doing Hard Knocks, but the fact that the majority of owners passed the Hard Knocks rule means they don't care about who doesn't want to do it.
One of these teams is not like the others
The Giants take the business of football very seriously and I can't imagine anyone forcing John Mara's hand here. We're not the Cowboys or the Jets who seek the limelight at the expense of football.
Goodell should take his Hard Knocks and London games and shove them. That being said, I wouldn't mind watching us.