That applies to a complex organization, where contributions are dissimilar, but my (admittedly limited) understanding of the physics involved suggests that black holes are not picky eaters. Mass is mass.

Given that the mass of the hole itself can be measured, as well as the mass of any given contribution, wouldn't it be possible to treat a domesticated singularity as a publicly-traded corporation, awarding shares in the total negentropy extracted proportional to the initial contributions?