If some of the so-called "radical left" policies that have been proposed were to be implemented, the rich would still be able to afford multiple staffed mansions and a yacht. I think that counts as a reward for their hard work.

People would still be able to amass enough wealth to do whatever they want for themselves and their family and friends, they just wouldn't be able to amass so much money that its gravitational field starts to warp all of society.