I think for each 25 dollar price reduction in ETH, there would be hash rate drop at this point. I pay about 5.5 cents a KWh and own my own data center as well as have remote staff. I am able to sustain during the downturn. What I noticed is that the only thing that would save a miner now is price of power. I am setting up a large solar farm and my power cost should be around 3 cents and should keep mining profitable to pay off the solar farm. This is the only thing I can think of that would save mining during these tough times.