You’re misunderstanding, talking like there’s one central organization that should be deciding who runs or doesn’t run.
No, #Republicans are absolutely aware of what you’re bringing up. Mainstream conservatives have been talking about it for a year.
It ends up being an issue of each candidate thinking that yeah, it’s bad when there’s too many candidates, so all of THOSE OTHERS should drop out.
Everyone knows there should be only one strong challenger. The problem is that all of the serious challengers believe they’re the one that should stay.
There’s game theory in there.