It’s really not that simple. I’ve had a short stint in the industry, and I can tell you that everyone on the team played a wide variety of games, from a wide variety of genres. It was completely normal to reference other games when explaining ideas or mechanics for the game you’re working on.
But just because the devs like the mechanics from a particular game, it doesn’t mean they can be adapted to the game they’re working on. And even when it’s technically possible, it might not be economically feasible.
Much as I disagree with @JJDancer’s phrasing, she’s right: the industry does not run on mere wishes. @Barnes explained well what @Halk meant by “desync issues”, and Joel Bylos – who used to be Creative Director for Conan Exiles – himself explained that same problem, repeatedly. So despite all the wishes to do something cool, it’s likely not possible from the technological point of view, and even if it were, it wouldn’t be cost-effective.