Any YC partners who wanted to do this could set up a parallel not-for-profit or charity. That organization might benefit from some of the easily scalable benef

Any YC partners who wanted to do this could set up a parallel not-for-profit or charity. That organization might benefit from some of the easily scalable benefits of YC (say, providing access to the YC alumni network), but would be independent. It wouldn't even necessarily need to be funded by YC partners - there are foundations which might be interested in partnering with an organization like YC to fund this kind of thing.