Luxor estimates 235 EH/s of Bitcoin mining capacity is sitting idle—about 20% of the installed total. If enough of it comes back online as margins improve, difficulty rises and hashprice gets squeezed again. A hashrate rebound can make the recovery less profitable. https://cryptoslate.com/nearly-a-fifth-of-all-bitcoin-mining-power-is-sitting-completely-dark-and-turning-it-back-on-could-trigger-a-brutal-margin-trap/(CryptoSlate)