my opinion only......
All the major scammers, aka founders, sat around a table and planned this as their last and final retirement scam. One last huge effort. Everybody worked it as best they could. Got every person ever involved in scams before, to bring their skills learned, i.e. if scenario a happens, how do we handle it. Thus, you get the biggest ponzi SA has ever seen.
Bitcoin and trading financial instruments (there is a hype about these, most people do not have enough knowledge about these), together with people's greed and ignorance, big companies' financial scandals, governments' mess-ups etc. suited them perfectly like a golden handshake for retirement
They all took their cut already
Nobody screwed nobody between themselves
All planned to the T
That's why everyone of them and everything said and done, was so brazen, "no-care, go-duck-yourself, we-push-forward". They pushed for the highest deposits in the shortest time-frame. The script evolved day to day with stuff to put their depositors at ease.
I also think it all exceeded even their own expectations, they never thought it will get so big, so quick, so many btc handed to them, so easy
They all know the procedures when a scam folds, they have been there before, they know processes take years, regulators got red tape to deal with, they probably got plans to ensure nobody gets found guilty or incarcerated, plans our honest, "do-not-enrich-yourself-at-the-cost-of-other" people do not comprehend, or will only understand with hindsight.
You will not see these founders starting scams again, they are done.
Their "students" will now take existing and new scams forward.