2015 Was Do or Die for Bitcoin Miners But Promise Lies Ahead2015 continued the trend: as the price of bitcoin fell and mining difficulty rose, miners were forced to sell both their bitcoin holdings and newly mined bitcoins to cover operating expenses and fuel growth.
This increased downward pressure on the price of bitcoin, and gives us all a painful reminder of how this network is designed with respect to miners: bitcoin punishes the greedy and the weak.
http://www.coindesk.com/2015-do-or-die-for-bitcoin-miners-but-opportunities-lie-ahead/
