Why do all of the Cleveland Sports teams suck? why have they not been able to win a Championship?

I'm sure a lot of people know that the city Cleveland, Ohio in the United States, is one of the most tortured American Sports Cities. Here is what it says on Wikipedia: "There is an alleged curse on the city of Cleveland, Ohio that prevents them from winning a major sports championship. To this date, it has been arguably the biggest sports championship drought in any U.S. city. The last Cleveland title came in 1964 when the Browns won the NFL Championship. The Cleveland Indians last won the World Series in 1948 and the Cleveland Cavaliers have never won the NBA Finals, losing in their first appearance in 2007 to the San Antonio Spurs. Some of Cleveland's most infamous failures have been dubbed with a title, often with a single word preceded by an ominous "the." Amongst locals and even sports fans in general, The Catch, Red Right 88, The Drive, The Fumble, and The Shot all evoke images of Cleveland sports futility. Less famous outside of Cleveland, Game 7 of the 1997 World Series is commonly referred to as The Error (briefly known as The Mesa), The Collapse (2007 American League Championship Series), and The Stop Sign (Game 7 of the American League Championship Series)."