I don't know if this scenario will happen again. Not with what's going on in this market lately. I searched on the internet, out of curiosity, what it costs to mine one BTC in different countries and here is what I found. You'll need to enlarge the image, sorry for that.
Click here to enlarge the image
image source
So there are a lot of countries where you could mine a Bitcoin under 5000$, even under 3000$.. China 3172$!! And I believe that, due to the adoption, the miners will migrate for their own interest.
As usual, thanks for the info.
Cheers!
Yea I've seen that chart. The data from Hayes came from talking to one of the large miners personally and those were the numbers said to him.