Why can't someone interested in a future in philanthropy, volunteerism, family building, etc., succeed at building a startup? None of them are likely to be inc

Why can't someone interested in a future in philanthropy, volunteerism, family building, etc., succeed at building a startup? None of them are likely to be income-generating ventures, meaning for all intents and purposes, it's a life of retirement. Retirement does not imply doing "nothing" for the rest of one's life.