the 'post 2017' bubble truth of the answer is this: any successful network running proof of work will become a massive supercomputing cloud where only commerci

the 'post 2017' bubble truth of the answer is this: any successful network running proof of work will become a massive supercomputing cloud where only commercially centralized entities , including mining farms, and successful mining POOLS , are able to participate in a vast network which becomes dominated by a cartel of players who can bring the COST OF WORK DOWN AT SCALE. this doesn't necessarily mean the network dynamic leads to LESS decentralizatin over time, but it sort of means it does at the 'non-commercial' level of doing work. this is WORK WORK at the industrial scale. proof of stake is everything else, where network participation doesn't require WORK as the core of ensuring a cryptophraphic signing system for a bunch of data. in the modern sense, work is electricity or some proxy for electricity ( proof of compute cycles in the case of 'compute' coins like golem )