If there is something that can deprive you from wealth is the fiat scam, now that's a ponzi.
How is that a ponzi ?
now with the crisis they are paying you with the money of other, and it was always like that for deposit or loan with fiat
That is not the definition of a ponzi.In order of it to be considered a ponzi, the revenue needed to pay for those loans/deposit must come from other investors( whose ROI then would be paid using later investors "investment", at least until the system collapse) .Those loans were expected to be paid using genuine revenues from the business( revenues from the banking business in case of bank deposits) , hence not a ponzi.
Ponzis are basically investments scam.The vast majority of fiat users sure as hell aren't fiat investors.
with bitcoin wasn 't exactly like that, if you want them you just buy from early adopters, there is no ponzi, there isn't something after you that you need to pay, so you can't call it a ponzi
The reason why some people sees bitcoin as a natural occurring ponzi is because the major factor in the rise of bitcoin price is from" investors" pouring money into it, hoping to reap profit from the rise in price(which is later fueled by more investors money).Such system is just as as unsustainable as ponzis and pyramids.Of course by this definition most bubbles(commodity ,real estate , dot com etc )can be considered as natural occurring ponzi.