One need not really go too far to justify Amazon vs. Groupon, because Amazon is an outlier. If you're trying to convince that I should invest in your business, and your best argument is that you might be able to be as good as Amazon if I just give you a chance, my wallet will be closing tighter, not opening. You're throwing the Hail Mary. Good luck to you, but you'll be doing it not with my money. Hail Mary is an exciting play on the football field when it works, precisely because it usually doesn't.