They're no better than their Russian/American/Chinese billionaire equivalents; they just find themselves restricted by higher standards in Europe.
Make no mistake, if it weren't for the laws currently in place, European billionaires would be making the exact same moves those in America currently are.
The saying "there is no such thing as an ethical billionaire" springs to mind. Who did they, or their families fuck over, in order to garner that sort of wealth?
Anyone who was truly altruistic, and had that sort of money, would not retain their status of billionaire for very long.