I thought this quote was right on the money although people don't want to hear it.
What I’m about to say is controversial. What’s wrong with running being a huge, huge deal once every four years? Running is never going to be mainstream popular like the NFL. It’s just not. The sport isn’t as interesting as say the NFL. In running, there isn’t the unpredictability in results like you have in the NFL. There are no turnovers. There are rarely big upsets. Galen Rupp is going to beat 28:20 guys 100 times out of 100. In the NFL, the 49ers were 0-1-1 against the Rams this year.
Rupp wins every time. He only doesn't win if something is really off and if it's that bad, he just wouldn't show up at the start-line. Contrast that to team sports where the worse pro teams can beat the best pretty regularly.