Your coin tossing tournament doesn't guarantee at all that someone will call ten flips in a row correctly. In your tournament, during each round, who gets to make the call? You have two people, but only one can make the decision of what they are calling. So in order to proceed to the next round, there is no guarantee at all that you made a correct prediction, only that you may have been standing there, while someone else made the incorrect prediction. In that sense, every single person in the world, except the guy who made the incorrect prediction got it right. And thus your game won't work. So I gladly challenge you to find someone to get ten correct guesses in a row, with just a few people and a few coins. How much are we wagering.
well in lotto the ods are fare worse than 10 coin tosses and people win the lottery a few wone 2x, one man wone 2 times in 4 months time