Well, FTX, as a stable business, should be a money printing machine - but that definitely wasn't an obstacle for its leaders to risk the business and jail time to speculate with customers' funds.
That is a phenomenal amount of risk free income. That's putting the founders somewhere high, probably first 50 names high, on the Forbes 400 list.
That seems foolish to risk to commit crimes.
But what many believe is that tether received crypto from the big exchanges and put it in crypto stuff that yields more crypto, so the billions of circulating tether is not backed by billions of Treasury bills or Chinese real estate: they are for a significant part backed by various tokens which have probably gone to zero since.
So why would people use Tether as opposed to Coinbase's stablecoin?