Let’s get one thing straight...
Evolution through natural selection is an incredibly slow process. As powerful a process as it is, it took millennia for dogs to evolve from wolves; it is undeniable that evolution in nature takes time.
Evolution through open source is, on the other hand, an incredibly accelerated process.
By openly working together as a community, humans have been able to pivot and change the way the software development process works, evolving software at a much more accelerated pace than its proprietary closed source alternatives. This communal approach really speeds up evolution in every aspect of a product, from development, to testing, to documentation, to deployment and everyone reaps the rewards.