EzekielRaiden
Follower of the Way
I think Pathfinder 1e shows that even an extremely popular edition does slowly lose its luster. At least IME, most folks who have stuck with PF1e did so because they like a bunch of very popular 3PP that rip out huge sections of the core rules. Frex, the Spheres of Power/Might stuff (which ditch Vancian casting for narrower "spheres" and spell-point casting), the Path of War stuff (basically a rebuild of Bo9S), Dreamscarred Press's psionics rules, etc. The community at large has had almost two and a half decades to examine the fundamental rules of the 3.x engine, and most folks know its flaws pretty well by now, particularly the sharp class-tier divisions and how much effort it is to run for high-level characters.It's still basic math. 5.5 is more than 5, yet still in the 5 range. Not many will be confused by that since they pretty much all learned basic math a long time ago. As for another revision in 2034, WotC will have to release another completely new set of rules at some point that is probably before that date. A lot of people get bored with the same rules year in and year out, and making minor changes as a revision doesn't change the game enough.
Around the 15-year mark, 3.X/PF1e had clearly begun showing its age. By the time you hit 20, many had started looking for something new, and 5e offered that.
I would be very much unsurprised if they announce a long-term public playtesting process sometime in 2030 or maybe early 2031, with its own ridiculous buzzword title like "D&D: Resurrected" or whatever. Especially if the revised version of 5e ends up being, as some have argued here, effectively identical apart from rewriting some of the classes and subclasses.