None will be cancelled. They will do the same thing that Arcade Fire had to do (under Live Nation). Drastically reduce the prices of tickets as the shows approach. Arcade Fire shows were still half empty, but you could get the tickets initially reserved in the "platinum package" - at $450 a piece - for $125 5 days before the show.
U2 can likely drum up enough demand on the existing shows that the drop won't be that drastic, but given this roll out, I doubt many second shows get added. We may see a couple new cities (Toronto, Vancouver, etc) with traditional strong demand, but second s