Take this argument to the espresso-charged residents of Silicon Valley. San Jose has a minor league team affiliated with the Giants, and the so-called Capital of Silicon Valley has a crummy, podunk airport to boot. I know we're after quality of life here. That's why people say they build stadiums. Think smaller crowds, fewer cars jammed into one neighborhood.
Development can occur on a human scale.
There is regional potential here as well. The Little League World Series takes place annually in Williamsport, Pennsylvania. There is a Northern League in the Midwestern states, and a California League in, well, the place you would expect. Around the majors, attendance is still down following the mid-90s strike, and free agency has been taken to such an extreme that your average fan can't keep up with the wheeling and dealing. So the average fans are voting with their feet.