If ponzi is wrong no matter what then casino is also wrong.
What casino did until you said they are wrong? Casino is a place where you gamble your money, have provably fairness system too, so which part of casino is wrong from you?
If casino is wrong, there will be no any casino/gambling site until now. All casinos will shutdown.
No matter how long your explanation about your ponzi, it's very far from casino (it's even doesn't have any relation between them)
So is "Doge Ponzi" game, you gamble that someone else will deposit after you. Thats gambling man, check the definition of gambling.
Gambling, the betting or staking of something of value, with consciousness of risk and hope of gain, on the outcome of a game, a contest, or an uncertain event whose result may be determined by chance or accident or have an unexpected result by reason of the bettor's miscalculation.Feb 20, 2019
from britannica
The ponzi game is fair as well, there is no additional hidden fee, there is no stealing there is no running away with money like all HYIP programms. + registration bonus 10 Doge and 2 doge per refferal.