If you try to translate that into a world of competitive sports, you couldn't even get the industry off the ground -- because in sports, the competition is the product. How many people would be watching games in a 30-team league if the same three teams always finished at the top of the standings? Who would ever follow a team passionately if they knew that it could disappear overnight by getting run out of business or merged into another team with little advance warning? What if a team like the Florida Marlins decided one day that they'd be better as basketball players and move into a new "industry" (the NBA)?
The whole thing falls apart when you try to apply economic principles to professional sports. This is because a sports league is socialist by its very nature to a certain degree. "Managed competition" is what keeps a sports league in business, because when the product is the competition it's important for a league to have enough competitive teams to keep fans interested.
Small market teams can win: see the A's, Marlins, Diamondbacks, and Rays. They just have to find their competitive advantage. Billy Beane found his with his analysis, and it worked.