Those are the ones that usually have a less-than-1x-but-not-zero exit though. They make enough to stay alive and eventually throw in the towel. Doesn't always

Those are the ones that usually have a less-than-1x-but-not-zero exit though. They make enough to stay alive and eventually throw in the towel. Doesn't always happen that way of course, but from what I've seen, the zero exits are the ones that burned hard quickly and then couldn't get more funding but never found any PMF.