I'll let you do the psychoanalysis of the sporting world viewership.
For me it's time and timeliness. Almost anything can be found out or a story broken before it makes it on to TV.
And the analysts aren't compelling. Not are the personalities.
I'll assume ESPN does their due diligence with analysis but at some point you have to do a sanity check and realize Mike Greenberg isn't compelling, Steven A Smith isn't Howard Cossell, there is no Chris Berman, Dick Vitale or anyone else to be the face of Sports Center or College Bball.