The difference is that Robert Sarver is a piece of owner, and that's been a known fact for years. He just managed to get himself involved in a scandal big enough where the NBA could finally boot him out just like they did with Donald Sterling....which is generally a seismic event in professional sports. NFL owners are still basically getting away with murder and continue owning teams
So yeah...your comparison makes no sense unless the Holts and group are found to be caught up in a similar scandal. Owners don't want to turn on other owners, but Sarver forced their hand by his transgressions...and especially the fact that they became public knowledge