I used to do something like this on Downside.com, but only for public companies where you could get the financials from the SEC. Then you have some hard data. Startup Graveyard seems to be listing companies that failed before they even launched. There needs to be some minimum qualification, such as "actually had at least one paying customer".
I'm actually interested in all commercial ideas that got funded. That means there was enough things in place to generate confidence from someone else other than the (possibly deluded) founder(s). Once customer cashflow appears, the business recipe gets a partial validation and the entire context changes. In my view the part before that bears a higher risk and that makes it more important.
