The obvious idea how to exploit them is to invest something small at the first day, withdraw it as fast as possible and repeat just with the interests from the previous bet (and of course take some money away from every successful round).
Has anyone tried that? Have you been successful? Is this kind of gambling popular/common. Has it name?
Why risk on their early days? Totally ignored them completely even they are paying.
The likes of you the reason why ponzi schemes creator always comes up with a new ponzi since they know even experienced ones can fall on their trap as mostly, these users think that they can get profit by investing early.
There are lots of ways to get profit. Stretch your bones and don't rely on passive quick income.