> But in real life, Anarchists will still argue that a Benevolent-Dictator-For-Life governance approach is wrong, even if it applies to digital artifacts that have zero marginal cost.

no they won't, FOSS project's governance model has no relevance to anarchist discussion. anarchists are against coercive authority, not leadership in general, and FOSS does operate under anarchist principles, which is why anarchist community is a strict subset of FOSS community.