Do you really need proof that energy infrastructure will be improved if demand is there to deliver it? They are selling a product.
It already is Bitcoin because countries have approved it for trade.
Don't be so sure of that. Ethereum is the one set to overtake bitcoins market cap in"the Flippening" soon (months away is the last estimate I heard). Official endorsement means nothing in crypto-land. Actually, it might even hurt a currency. ZCash was trading ABOVE bitcoins value about 6 months or more back, and that was because it allowed untracable transactions and had signifigant investment from people concerned with anonymity.
I'm not sure about zcash personally, but it does go to show there is a substantial disconnect between government and crypto, and what government says is about as effective as trying to shutdown say, bittorrent.
Taxing the hell out of it is likely, however, as politicians get more educated (the Ponzi schemes, the black market deals, the volatility of it, the wastefulness of it on physical resources, and so on).
I massively disagree about "likely" but it is likely to get more regulated as time goes on, yes. Taxing the "hell out of it?" No. No one wants to kill this at this point, save for people upset they can't get graphics cards.
I am not saying that's not a problem, I'm saying don't kill an entire industry in your solution. There are other ways that needn't be so terminally irreversibly damaging.
the Ponzi schemes, the black market deals, the volatility of it, the wastefulness of it on physical resources, and so on
The only point you might have is it's "wastefulness of it physical resources" (personally, I think running a payment network is not wasteful, and really question whether it is that much more taxing vs what we did with these in the first place), the others are universal criminal activities that occur on all currencies, and are decidedly in the minority, especially since the shutdown of the silk road.
Oh and to correct the title of this thread. Mining is driving up prices on it's own. DEMAND IS DRIVING UP PRICES. The more cards sold and being used is really a good thing in my belief. It will force advancement in GPU even further than what we already have which is awesome.
That's a point as well. If they made a really awesome compute-only card as a result of this at a mainstreamist price point, well, supercomputers and miners everywhere would ALL benefit.
People think the space race is a "massive waste of resources" as well. People in general are short-sighted. There are genuine returns from both these things that just because they cannot see them, they assume aren't there.