Based on current prices BTC hashrate will decrease to 70% before mining equilibrium is achieved across all three chains. If this happens quickly and the hashrate drops to 84 ExaHash BTC chain will slow to a crawl. Unlike before miners who have left will not return to mine at a loss out of loyalty. Panic may set in when this becomes clear which will lead to a drop in price and we enter the dreaded Chain Death Spiral.
Drop In BTC Hashrate