Re:The Bitcoin Blocksize: A Summary
by pstrateman on Wednesday August 12, 2015 @02:54PM
(#10049843)
The marginal cost of mining is actually relatively small for large scale operations compared to the fixed costs.
(In general you cannot get 10+ MW of power without agreeing to pay for installed capacity and energy separately)
(Which I realize is for a long time in terms of there being a block reward, but if bitcoin falls by 50%, so does the reward...)