[_xnmw]

Warren Buffett has a term for this, it's called "float". At my current (active, not abandoned) startup, my guess is somewhere around 30% of active paying customers are also non-users. Lots of industries have this. The majority of gym membership sales (50%+) and even a significant number of airline tickets are unused.

[atombender]

No, I agree that "float" exists, I just don't see any numbers backed by anything. Gut feeling isn't data, unfortunately.