I just found a video when etsy talks on softdevtube.com about What went right, what went wrong.
Alternatively you can watch the slides of that presentation.
Scaling Etsy: What Went Wrong, What Went Right from Ross Snyder
What makes me thinking it is worth mentioning these slides is, that I believe in the same principles (transparency, cross functional teams, talking about mistakes, reevaluate former decisions, …) written in there.
Enjoy!