It seemed pretty clear to me that Zappos was in decline as an independent entity. Fulfillment was already gone. They were in the middle of removing their product photography team. A section of their office was being used as a community co-working space. There were fun quirky office areas but completely devoid of employees. It wasn't clear if Zappos did anything beyond customer service. I don't know if Tony Hsieh could really call himself a CEO anymore under Amazon's thumb.
Zappos was really proud of their long weird onboarding process. They stress over and over their core values. You write and perform a skit about those core values to the company when you "graduate". At the end, if you don't think Zappos is the place for you, they'll pay you a few thousand dollars to leave. I'd imagine that people who aren't completely in love with the company would never go through this process.