What happens when entertainment is no longer entertaining?

This week, researchers reported that they can now image brains to diagnose CTE while people are alive. Previously, the only way to know if CTE caused a person depression, dementia, or suicidal tendencies was through an autopsy. Repeated concussions have been linked CTE. 

Ta-Nehisi Coates puts together a damning timeline on the NFL actions regarding concussions. Essentially, league executives have had a reason to suspect for quite some time that players were playing Russian roulette with their post-football lives, yet they told players differently. An excerpt:

2007 - An NFL safety pamphlet notifies players, "Current research with professional athletes has not shown that having more than one or two concussions leads to permanent problems if each injury is managed properly. 

2009 - NFL spokesman Greg Aiello acknowledges, "It's quite obvious from the medical research that's been done that concussions can lead to long-term problems, 

2009 - The NFL begins to put up posters in locker rooms that state, in part, "Concussions and conditions resulting from repeated brain injury can change your life and your family's life forever."
"This is about Roger Goodell, that fraud, covering his own ass," says former defensive lineman Dave Pear.

In 2007, the NFL was still arguing that concussions wouldn't lead to serious problem? Surely they heard of what happened to these former players two years earlier:

2005 - In June, former Pittsburgh Steelers guard Terry Long commits suicide by drinking antifreeze. Neuropathologist Bennet Omalu later examines Long's brain and concludes he suffered from Chronic Traumatic Encephalopathy.
"People with chronic encephalopathy suffer from depression. The major depressive disorder may manifest as suicide attempts. Terry Long committed suicide due to the chronic traumatic encephalopathy due to his long-term play," Dr. Omalu tells the Pittsburgh Post-Gazette "The NFL has been in denial."Steelers neurosurgeon Joseph Maroon says Omalu is employing "fallacious reasoning" saying "I don't think it's plausible at all ... to go back and say that he was depressed from playing in the NFL and that led to his death 14 years later, I think is purely speculative. 

2005 - In July the peer-reviewed journal Neurosurgery prints Omalu's autopsy and brain analysis of "Iron" Mike Webster. Omalu concludes that Webster suffered from Chronic Traumatic Encephalopathy.

I've enjoyed watching football for a long time, but now every time I see even a highlight on "SportsCenter" I just think about how guys are destroying their brains. Sure, they get glory, celebrity, and big paychecks, but ask the widow and children of Junior Seau if that's a tradeoff they'd make again. Even researchers find that it's only a relatively small number of former players affected, say 10 or 20 percent, it's still too much of a sacrifice for something driven primarily by people wanting something to watch on Sunday afternoons.

And I'm a guy who grew up immersed in Southern football culture. I live a mile away from where the Titans play. 

I wonder how many other people are going to start feeling the same way? I mean, with the NFL, we're talking about a $9 billion business and that's without taking into account the massive media industry built around. For that matter, what about the cultural and financial impact of college football?  

When I read Seabiscuit, I learned that the major American spectator sports during the Depression were horse racing and boxing. History shows there's nothing guarantees that football will continue to dominate the modern sports landscape. 

Given all this, it looks like a Major League Soccer franchise would be a bargain investment.