This „punishment“ or rather responsibility would not be something that the average wage earning person has to worry about financially whatsoever. There is however a lot of accumulated wealth, that could be used for much better things than the third luxury Yacht in Monaco. So if this extraordinary luxurious wealth can be traced back to exploitation and slavery, and the government would enforce this money to be used for reparations in forms of community centers, museums, research for those who’s ancestors freedom, cultural heritage and often lives were taken, this would not be a punishment. As a German I think there is good reason to individually act responsibly concerning the crimes of e.g. my great grandfather. It is not my crime, but it’s my responsibility to call it such, to do my best in every day live that something like it will not happen again. Calling that a punishment would be unfair compared to the suffering of the victims and their living relatives.