So a question... how do you balance confidence from a well-understood solution to a well-understood problem in a well-understood market, with the kind of blue-sky dreaming that seems to excite investors? Crossing into that blue-sky world starts smelling like BS to me, but when I say "We could realistically get a $100M chunk of an existing multi-billion market", it doesn't seem ambitious enough?
It smells like BS to you because you don't really, honestly believe that you're addressing a multi-billion dollar market.
That's not necessarily bad, but the whole point of the essay is that you should first come up with a strategy for a market that you really think has a shot of being that big.