The prob is how the hell would we be guaranteed a return. Let's say miracle happens and you win top 3 most of us would want the money for sponsor back in bitcoin. What makes you liable to pay up? It's basically less risk for any of us to just bet 1 btc at 20x. Even at 5% chance our risk is still significantly less. I'd probably do this but there's no accountability.

Btw about 12 people over the years have come here asking the same thing you are now. It's just so effing risky like doing a 9999x bet.