Though I'm on Hacker News, I'm not a software developer. I would have thought it obvious that everyone would shift their hiring practices to be community-based, by looking at GitHub.
I suppose most companies, even in the so "progressive" tech industry, are closed systems with little connection to anything in the outside world. In reality, Silicon Valley startups are just small corporations in the digital era. There is no disruptive about them at all.
For the intelligent business person, the lesson to learn here is that design, development and production processes need to be integrated with community. Either like with Automattic and Wordpress, or by going open source on GitHub.
All but a few closed companies will die over the next decade because they are unable to hire well.