This is a pretty common point of view, but I wonder, how would this be enforced in a free-and-open software development ecosystem? Who would go around stopping

This is a pretty common point of view, but I wonder, how would this be enforced in a free-and-open software development ecosystem? Who would go around stopping people from launching their own take on a solution to the same problem apart from the "blessed" solution? In a world where everyone is free to choose which problem they'd like to solve and how to go about it, and it is impossible for everyone to agree about even the most trivial of options, you cannot ever have only one text editor, package manager, init system, etc. Seeing how well most developers welcome change in their favorite OSes, editors, etc, I imagine a world where every developer bends their efforts towards the one true chosen solution, and are not allowed or able to choose to "waste" their efforts on another solution wouldn't yield as vibrant a software ecosystem as we have now.