This might also be the reason on why ETH have decided to change it's consensus mechanism but a lot of people didn't really like that idea, especially the miners because they can not mine ETH anymore. Not only that POW coins are more secure but I think they are also more fairer. Another reason why many of us dislike that change is because it makes the coin more centralized.
If the algorithm did not change, then asiki would have long since ousted video cards from the market. We have seen ASICs E9 Pro 3.7GH. Perhaps in a year ASICs with a hashrate of 10GH would have appeared and the story with bitcoin repeated when video cards became useless.