Ross Greenburg was a sports visionary at HBO.  He resigns with his legacy firmly intact...the accolades speak for themselves (51 Emmy and 8 Peabody awards).

He apparently is going in another direction because he's tired of the 'mean-spirited' 'grind' of the business of professional boxing.

Can't fault him there.

I think that Greenburg's days were numbered when he refused to honestly accept the changing times and landscape.

Over the last 10 years, an undeniable movement in combat sports has been underway.

Simply put- He wouldn't accept the fact that the younger, growing fan base had begun to move towards MMA in an ever increasing manner as its combat sport of choice.

That doesn't mean that professional boxing was not great but the market has been speaking with a loud and clear voice for quite some time.

The music industry and its' captains of industry met a similar fate when they failed to properly embrace digital music.  Young people didn't want CD's any more.  Apple's itunes got it and most everyone else didn't and we see how that has worked out...the dynamics of the fight game aren't much different. 

Young people still love combat sports but the preferred form isn't boxing.

Note to the next HBO Sports Prez- don't bet on CD's.