Interesting, the cost of bitcoin mining is exceeding the price in some countries. It is exceeding the real value in all countries. See mining cost provided by Ian Bremmer January 2018

Ian Bremmer
President at Eurasia Group
Cost to mine one bitcoin, based on avg electricity rate

S Korea $26,170 (highest)
Germany $14,275
France $7,930
Japan $8,723
UK $8,402
Brazil $6,741
S Africa $5,948
Estonia $5,551
US $4,758
Russia $4,675
India $3,274
Venezuela $531 (lowest)