I recently listened to an interview with Tom Dale, one of the developers who helped create Ember. He was comparing Angular, which is maintained primarily by developers at Google, and Ember, which has a smaller and more diverse group of contributors behind it.
I thought this remark was interesting and also applies to the WordPress world:
“I think of open source project as an organism. An organism has an immune system and the best thing you can do for the immune system of your project is to diversify as fast as your can.
This includes valuing contributors who are not just code writers. It includes valuing people who write documentation, valuing people who work on infrastructure, valuing people who run events and organize meet-ups in the real world.”