Interventions should be focused on dampening the spring action - less rich "rich people" and less poor "poor people". I think there is an argument that could be made to consider these policies from an overall "growing of the pie" perspective. IE, do these policies inhibit total growth and make everyone worse off? However, my limited understanding is this is essentially trickle down economics and the evidence this occurs (versus rich people hoarding wealth) is limited. So I'm open to the argument but it would need quite a bit of rigor.