Emacs proceeds strategically, not tactically. Even though it outlived so many different editors it was only a single decade, a point in history when it was considered kinda, sorta mainstream, the rest of its lifetime it wasn't.
Emacs is just like Lisp itself - it never dies, and never gets to be hugely popular. Anyone wishing either speedy death or widespread popularity for Lisp (and Emacs) will likely remain disappointed. Those who value Lisp and Emacs will continue using them, even decades from now. Those who never learn to appreciate either - will keep ignoring them.
There's nothing wrong with looking at the ecosystem and saying "huh, this is a pretty good idea". Emacs (the community as a whole) didn't ignore the LSP, and thanks to that it gets first-class support for tools that otherwise would have required someone to show up and "do the work" to get it to happen.
I do think we're in agreement about "strategically, not tactically". Like Emacs _is_ doing its own thing. It's just that sometimes you can see good ideas from other places.
The only rule it insists on is the parentheses, and it's quite ridiculous how people dismiss the entirety of this foundation for incredibly powerful ideas and abstractions, solely for that reason.
Not a goal in itself to capture everyone, of course. But it's a data point!