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To my regret, you are not right, dear marlboroza. One of these two investors takes the entire bank. That is, he will take 2 dollars and will receive a profit of 100%.
And if they reinvest?
What if first "donor" is waiting for $8? 8 people will lose money. What if they win and reinvest 8$? 16 "donors" will lose money. And so on. It seems that you don't understand how ponzi works or you are just playing dumb.
Tell me, dear, and the pension fund in your country is the Pyramid?
You say he is regulated by the state. What is or who represents the state?
Who can you trust more, the prime minister with his inferences in his head or a smart contract?