Unfortunately we still don't know where that sweet spot is. In a world where it is really easy to move money to avoid taxiation we may very well find out that t

Unfortunately we still don't know where that sweet spot is. In a world where it is really easy to move money to avoid taxiation we may very well find out that the "sweet spot" is at 0%. Then we only have to find out how a country can survive without taxes ... another unsolved problem.