Interesting the real world implications of proof of work mining; rising electricity prices in areas where mining are centralized is another forseeable implication.

As for your example and the computing power scarcity that comes out of GPU's being bought up by miners, I think crypto is prepared to answer the problem its creating. Isnt Golum supposed to be a decentralized super computer network, which can be used by users researchers, etc?

I think so.

Great post. Thanks.