I see 99 ways this approach would fail, except one case, it could work if my product is able to hit product market fit. PMF is why most startups fail, not because they couldn't figure out how to sell... Even we assume Saas, FinTech, Dev tools, Uber for dogs are in the same bucket of sales variety, then applied this battleship approach, you'd be dead in the water before you realize your product isn't solving a problem you can charge money for yet most people you ask would tell you if you added certain features it could be useful, or if you tried this other segment of customers you could make it.<p>Plus "buy my book to learn more" didn't work for me. I'm a founder. Just saying.