The answer to this question may tell you something about how an entrepreneur thinks about their market and their place in it. Can they see the big picture? It c

The answer to this question may tell you something about how an entrepreneur thinks about their market and their place in it. Can they see the big picture? It can also serve as a sanity check. Ultimately markets just need to be big enough, but I've seen investors disengage when you can't give them a clear authoritative number.