Ignoring the exponential pace Wayland has improved for end users in the last 36 months (see for example Plasma/Wayland Showstoppers[0]), would staying on X11 not be more of a sunk cost fallacy? There aren't even any Wayland alternatives with meaningful momentum
It's entirely possible that both suffer from sunk cost fallacy, and from that analysis there isn't a "better" or "more" sunk cost. It's already sunk, anything you sink further into it is a waste.
Right. X11 is just old and widely used. Wayland is entrenched in its own bad decisions. It used to be one legacy and one new thing, but now it's one legacy and another dragging its own legacy.
So what's your suggestion start a 3rd initiative ?
It will suffer the same same problems that Wayland has. the problem is that X is flawed at the design and level and whatever you propose that fix those design issues will face the same type of push-back from the communities that don't like it because it's not the way their grandpa taught them to do things.
keep in mind the wayland devs are the xorg devs that gave up on that project because how hopeless it was to fix things around.
[0] https://community.kde.org/index.php?title=Plasma/Wayland_Sho...