I've been personally thinking about ways I could use my future earnings and financial status to give back in addition to advocacy/volunteer work and giving to mutual aid.

I don't have the legal or real estate knowledge to know how to actually make this happen, but I think there is space for a model where people could use their ability to get a mortgage to build/buy multi-family housing and lease-to-own it at-cost to a housing co-op in a type of Ulysses Pact that will create below-market-rate housing.

I envision some kind of standard contract for something like this akin to open source licenses or most housing rental agreements, so that it's easier for more people to emulate a similar setup.