I've used Kite, it simply wasn't as good as Copilot. I'm not sure why they say that Copilot still doesn't work well, it works well enough for me and I presume everyone else who pays for it.

That being said, glad to see a lack of Our Incredible Journey type language here and more of a true postmortem of their business and technical decisions. It is rare to see a company go into so much detail when shutting down.