It might be a tiny reduction, but I think that the start of a new era is now becoming more obvius. We kept seing mining becoming more centralised, mining at home kept becoming harder while the difficulty was constanly rising and the price was around 350. I believe that this reduction was caused by home miner being pulled off the wall because of not being profitable anymore.
This is probably the only reason, and a rise in price, might cause a lot of those miners to reduce.
Mining is least profitable in these days.