Replace Neovim with Chrome, Vim with Firefox. Does your argument still stand?
Starting up a competing project has a huge cost. Once started, it's overwhelmingly better for the world for the competitors to continue[1], so that they can continue to make each other accountable.
[1] Unless one of the competitors is able to subsume the other. Like EGCS subsumed GCC back in the early 2000s. Total victory is a valid emergent outcome of competition, not somebody deciding what 'should' happen.
Starting up a competing project has a huge cost. Once started, it's overwhelmingly better for the world for the competitors to continue[1], so that they can continue to make each other accountable.
[1] Unless one of the competitors is able to subsume the other. Like EGCS subsumed GCC back in the early 2000s. Total victory is a valid emergent outcome of competition, not somebody deciding what 'should' happen.