That is totally irrelevant as the money gets recycled into the economy. I might pay the window cleaner in cash but he then goes to the pub or Tesco and spends it. Hoarding it off shore is selfish, greedy and immoral behaviour - even if it is legal, which it shouldn't be imo
It is a co-ordinated international journalist story. Fantastic good work, this is exactly what journalists should be doing and getting maximum publicity for their investigative work.
We must shut down tax havens and secret off shore companies