I said that we don't make them tour. They can do so if they want, but they don't have to do so to run a profitable show, and so they don't have to run themselves ragged doing it. They can just tour for short bursts when they're all feeling up to it, visiting only large cities where it makes sense, staying long enough at each city to treat the place as a short vacation, and taking a long break after the tour before the next one.
The issue is that if a Broadway show loses a cast member for whatever reason they cast another one. A band can't exactly do that. If the criteria were 'play the songs written by X by the most talented people available' then I am sure that (barring IP issues) you could set that up in a major city for a weekly seasonal show, but since people want to see the original band members, that isn't what we get.