They should have some kind of controls: - throttle how much a new account can wager, allowing more to be placed after the account gets older - limit double-do

They should have some kind of controls: - throttle how much a new account can wager, allowing more to be placed after the account gets older - limit double-down bets to some fraction of your initial. To reduce the benefit of last minute wagers - end wagering at a random time before the deadline. - ban accounts that act in concert to evade the throttling. Or charge a hefty one-time fee or escrow that you eventually get refunded