Most of that is done to foster a sense of community or to instill humility and discipline, not for its value as labor. The vast majority of the productive labor that goes into running most dojos is performed by instructors and senior students.

Fair enough, although overall I got the impression that it was a combination of both. But, even so, even if it's mostly just a "instill humility and discipline" thing, it still was possible to set up standards where we'd do that sort of thing. So to the extent that these sorts of things really do depend on volunteer labor, it should be possible to arrange.

Heck, given that the goal is to have that sort of sense of community, one could explicitly state that as a reason to get people to join in on the work.