Beating the high price of sports tickets

Read about the Chicago base ball team buying up real estate across the street in the paper this morning.  No, not for parking but to grab the revenue for people sitting on the roof tops to watch the ball game.  Google Earth to "Wrigley Field, 1060 W Addison St., Chicago, IL 60613" and you can see the bleachers on the roofs just north of the left field stands.

Just like the drive in movie theaters that put the back side of the screen toward the road I guess.