The dead rich people are replaced with new rich people. Nothing changes.
It will absolutely change things. The only reason this won’t work is because things aren’t actually bad enough yet that anyone is willing to go to jail for this. I don’t even want to go to into detail because I don’t know if that’ll get my banned or put on a list (lol) but if enough if the rich are publicly brutalized, it’d make the next person hesitant. This isn’t a movie where there’s always another evil general ready to replace the first.