I see what you mean. This is a reality in a regular savings account too, though. Accounts with higher balances earn more interest. With us, you earn more tickets. Hopefully the incentive to get more tickets helps people start building savings and they save more than they otherwise would have with a vanilla savings account.

Someone else having more tickets than you doesn't really affect you other than the potentially splitting the bigger prizes, but having more depositors also helps us offer bigger prizes in the first place, so it's somewhat circular.