How long until mining concerns start building, or at least financing, their own power stations?
I think it's already happening in the background, we just don't get to read much about it. The negative to this is obviously miner centralization with how only the deepest pockets will be able to set up their own power source.
On the other hand, I don't think the same will happen in Scandinavian countries with how there is almost no limit to what they can generate. It's pretty much you pay and we deliver, even if it concerns insane amounts of megawatts.
I however wonder if there is no easy way to re-use the heat these farms generate. Currently most of all this heat is put to waste while it's actually a valuable and near infinite resource with more value than what people credit it for right now.