I don't know why turn based is such a turn off for people now. I've heard the argument that it is "antiquated design", but I tend to disagree. For example, look at the fighting game genre, when was the last real innovation in that, Dead or Alive 2 with it's interact-able stage design, and that was what, 1999? But alas, people still go nuts for a genre that every new system just equates to longer combos, it's smoke and mirrors at best. Turn-based RPG games innovated more in the 90s than the fighting genre has in it's entire existence, with different combat systems such as ATB, timed attack presses a la Super Mario RPG, Grandia's turn timer bar, the RTS-meets-Auto Battler of Ogre Battle, Legend of Legaia's directional input based combat to discover new moves, spawning a whole subgenre of tactical turn based RPGS such as Fire Emblem or Langrisser.
As other commenters have said, many other genres don't get the flack that RPG games do, but have had about the same if not more stagnation. What is it really turning people off then? Is it not flashy and visceral as games like Devil May Cry or Ninja Gaiden? Is it because of long dialoge sequences that can feel more like reading a novella than playing a video game at times? Who knows, but even if the industry is shifting away from turn-based combat, we always have the classics, and Dragon Quest will probably never change, thankfully.