...Video game systems analogy: The years between versions is increasing and it even seems that, with backwards compatibility meaning we don't need to keep rebuying the same games, we seem to be reaching a point of no new PS6 or next Xbox that is a siginicant leap in capabilities...
Kinds of video games (puzzle, simulator, fps, rts, arpg etc and more recently soulslike/roguelike/roguelites) : Kinds of TTRPGs (5e D&D, OSR, PbtA, GMless/solo, Storygames) feels more closely aligned than above.