[darkxanthos]

I'd like to see material like this presented along with the failure cases and an analysis of why they failed. I expect there are many cases where businesses will fail even though they do things "right" just because dumb luck. This reminds me of the TED Talk about medical journals only publishing affirmative results.

[byosko]

Not all of the companies are successful or have been successful. They were successful at a specific point in time, doing a specific thing (like getting through problem interviews, for example) but it doesn't mean they were big hits as companies.

And many of the cases studies are about companies that were struggling with problems and managed to improve. The e-book specifically (and Lean Analytics, the book) aren't about understanding why startups failed, they're about how to use analytics to minimize failure and iterate past it.