Have you even considered the implications of regulatory approval to create a bitcoin futures market on the CME?
And then the approval to create BTC exchange traded funds (ETFs)?
These are not events that occur for ponzi schemes.
Of course they are

. Read up on Bernie Madoff who is now in jail for the biggest ponzi scheme of all time in the US:
https://en.wikipedia.org/wiki/Bernard_MadoffHe was a top market-maker on Wall street not to mention non-executive chairman of the NASDAQ
hence your arguments prove absolutely nothing
Madoff was a classic ponzi. He operated outside of the scrutiny of regulatory oversight.
Exactly the opposite of the CME and any BTC ETF.
Where are the CME sponsored ponzi schemes?
The whole financial collapse in 2007-08 is a pretty good example. At least there governments stepped in to salvage some of the damage done. For the cryptoworld there will be no such action. Even now many are finding it extremely hard to transfer Bitcoin - it takes hours or days. When the roof caves in, there will be no financial salvation of anyone trapped within and there will be no chance of selling out before all is lost