So maybe income equality + disposable material goods is not a good path towards people being happier and better off.
It's our job to build a system that will work well for ourselves. If there's a point where incentivizing a few to hoard even more resources to themselves starts to break down in terms of overall quality of life, we have a responsibility to each other to change the system.
Look at how many miserable-ass unhappy toxic asshole billionaires there are. We'll be helping their own mental health too.