You know what? I'm going to do this, just so I can settle this once and for all and be right on the Internet. I'll throw up a crap product, work on it like five hours a week, and we'll see how far in the hole I am from hosting costs.
Incidentally, it's the second part ("Carefully study how best to present your offering to your target market") that I believe to be tremendously difficult and that I don't believe I will have much chance at. From where I'm standing, one of three things happens:
1. You get lucky and happen to be very good this.
2. You get lucky and happen on the right approach without actually being good at this in general.
3. Your product earns back nearly 10% of its expenses.