Bitcoin's value comes from scarcity. If we suddenly increase the maximum supply from 22 million to 22 billions, the value will go down drastically because of increased supply. Bitcoin is fundamentally and structurally different than ponzi schemes. The major difference is bitcoin is decentralized. Ponzi scheme are centralized to core.

When someone says that bitcoin is ponzi because the other investor's money flow increases its price, you just need to say that as per the methodology, the stocks markets are also ponzi because the same things happens there!