I think we do not need a nest of rules, but a profit model and salaries.
Volunteerism means that people do what they want, and then leave, and no one takes over what needs to be done.
This is why most volunteer orgs fail and why all surviving ones use paid staff.
It's more efficient and effective (!!!) to raise money to pay people than to use volunteers, UNLESS it's something very discrete like show up on the weekend to build houses.