I actually proposed a similar idea in a few places months ago (links below). I plan to post about related topics, e.g. my future posts might help to understand how such deals could be enforced, so if you are interested, then follow me
https://forum.effectivealtruism.org/posts/3rDfScbBNhbsk93gF/how-to-stop-inequality-from-growing
https://theoreticalexplorer.com/Alignment+between+humans/Equality/How+to+stop+inequality+from+growing
I actually proposed a similar idea in a few places months ago (links below). I plan to post about related topics, e.g. my future posts might help to understand how such deals could be enforced, so if you are interested, then follow me
https://forum.effectivealtruism.org/posts/3rDfScbBNhbsk93gF/how-to-stop-inequality-from-growing
https://theoreticalexplorer.com/Alignment+between+humans/Equality/How+to+stop+inequality+from+growing