It's quite different in games where what you want to sync to users is just the global state of everything at a hard-defined frequency (10, 20hz, whatever), with

It's quite different in games where what you want to sync to users is just the global state of everything at a hard-defined frequency (10, 20hz, whatever), with well-defined heuristics like planar distance from a character. That's not what you want or what you get in web apps.