Oh, I know. My erstwhile startup seemed like a hot area when we began it a year and a half ago, and people in our target market said "Thank God" when I said what I was building. Now, nobody seems to care, and none of our competitors took off either.

I'm saying that even under his best assumptions about the market, his product was not profitable. He ended up getting customers after all, but even under generous volume and gross margins, it couldn't cover overhead.