The greedy miner will most likely want to mine as much as he/she can and get his or her investment back befoe n algo change. As a result he/she will most likely sell his/her mined coins as soon as he/she can, and this will have a negative effect on the price of monero. The Eth Asics are also having a negative effect on the supply/demand of ETH and as a result a negativeeffect on the price of eth.