I haven't worked on large gaming projects, but I've worked on large CG feature films. I was a little horrified about how aggressively they adopted some technol

I haven't worked on large gaming projects, but I've worked on large CG feature films. I was a little horrified about how aggressively they adopted some technologies. The theory was that Pixar proved a lot of their technologies in their short films (Disney a bit of that, too, in previous years). The studio I was at didn't do that and both Disney and Pixar seem to have moved away from that at least a decade ago. Very very rarely, they'd repurpose old projects or chose a sequence or specific department for releasing something--that often was a mess (resources spent at the "boundaries" instead of shoring up the new tech). I imagine AAA games are similar. You have 4 years and ship one monolithic game. Maybe you could prove out this idea in a small area like artist's tools or an engine fork (similar to the approaches above). Trying to incrementally adopt something would take 2 or 4 games (10+ years) and I just don't see technology roadmaps like that. Especially if it's not a huge win.