I seem to recall Bury became fan-owned for a while after their previous financial crisis around the collapse of ITV Digital, before eventually going back into private ownership.
I wouldn't say fan ownership cannot succeed, because there's no reason why it shouldn't if a club budgets within its means, but it requires a very pragmatic and patient supporter base who will always prize the stability of the business above the pursuit of success, and I don't know of many support bases who can sustain that ideology beyond a few defeats.