The difference between this and a tax is that the taxes' exact height is known beforehand, and the government is not actively involved in creating the reason wh

The difference between this and a tax is that the taxes' exact height is known beforehand, and the government is not actively involved in creating the reason why the taxable sale is taking place. "Sell your business below value, give us a nice cut, or otherwise we'll destroy your business" is not a tax, it is extortion, exactly the same thing that those mafia gangsters supposedly do to restaurants.