What about the case for a startup? Say, you raise $500k but you "know" (for the sake of argument) you need a million to make the thing work. No gamble: 0% cha

What about the case for a startup? Say, you raise $500k but you "know" (for the sake of argument) you need a million to make the thing work. No gamble: 0% chance of success * 53% Put it all on black: non-zero chance of success * 47% I don't imagine this would go over very well with investors, though.