Not sure how we got onto pirates, but back to the matter in hand. Bottom line, you can tax rich people and can definitely tax really rich people. Jobs won’t disappear overnight and we won’t all be living in cardboard boxes - especially the producers of cardboard boxes because they would be quids in.
There is nothing wrong with wealth, but a lot of wealth is produced on the back of other peoples efforts and they too should be allowed to share in that wealth (decent pay, benefits etc) and they should see that everyone fairly contributes to the society that we all live in. You may bemoan the State and its inefficiencies yet the billionaire profits from the State in terms of security, infrastructure, educated and healthy labour force etc and without the State the billionaire may not have his or her billions so it is not unreasonable to expect to pay something back and maybe a little more on top in recognition of the benefits the State provides.