Well, you state that 0% of your startups had a bad experience. But of course these were the ones that got funding - they are already winners, even if they later failed to make it big. What about the 400-odd that didn't get funding? It takes much more than a couple of weekends in a cafe to put together a decent startup proposal, often the startups have made considerable sacrifice, not to mention putting their hopes and dreams on the line, even to get face time with potential investors.