Goodall will go down in history as the guy who orchestrated the death of the NFL. And he was paid 42M a year to do that.
Nah, Goodell will get his money from the owners. I think he has video evidence on each of them. However, I think the NFL and football in general will become as irrelevant as boxing has become within the next 20 years.
My reasoning is that more and more parents are forbidding their sons to play any kind of organized football at the elementary school level. Because of this, many of these boys will become more interested in soccer, basketball, baseball and any number of other "less violent" sports offered by the schools.
Eventually, the lack of kids playing in elementary and middle schools will result in a dearth of boys to play at the high school level and high school football will become sparse and regional. That will propagate to the college level, and so on up to the point that there isn't enough new "talent" to replace those leaving the game due to age or infirmities.
When this happens, the NFL (and CFL, when you get down to it) will have three options. Either severely cut the number of players per team, cut the number of teams in the league, or just fold up the tents and call it a day.