As ethically perverse as it may be, proof-of-work happens to have this probably in the origins unintended feature of introducing a powerful deterministic skin-in-the-game variable into the mechanism.
Whaddayamean 'unintended'?!? The skin in the game aspect is the fulcrum upon which the entire Bitcoin ecosystem balances.
Well, I didn't express myself clearly on this point, as it also refers to my long post in the Ivory Tower. Most of today's skin in the game with Bitcoin is consisting in the huuuge expenses miners have to continuously fund to keep mining. I doubt that Nakamoto would have foreseen the rise of ASICS and the Bitcoin network swallowing more energy than entire countries like Ireland. That's so much more skin in the game than anyone had predicted in the early days.
. "satoshi"