Exchanges: The profit model of securities companies is handling fees. There is income when there are transactions. In comparison, the currency listing fee is really not much money. However, exchanges are also facing the strictest supervision. Once any financial asset is targeted by those old B-listers on Wall Street, the money-making effect will take a sharp turn (disgusted face). So in order to embrace supervision, the passive market-making project parties themselves cannot control the currency price, many derivatives have been suspended, and many regions have restricted the functions that can be used, which is neither fish nor fowl.