Ecosystem.

For example, the Common Lisp ecosystem never converges to a single implementation of any single "thing".

Take Rust. You may not like Serde for serialization, but the ecosystem has converged to it. Similarly, Tokio. You use them until you understand why you need something else and then bite the bullet of going against the tide when you can't make them work anymore.

Okay, so what serialization has Common Lisp converged to? Uh, yeah, about that ...

"Lather, rinse, repeat" this for any value of <X> (serialization, async, objects, concurrency, etc.) and anyone sane quickly reaches the conclusion "Just say no to Common Lisp".