In fact, Robinhood and Futu are mostly PFOF models, which means that orders are not actually connected to the market, and MM provides depth and competitor positions. The user actually has no commission. Zero commission on US stocks has become the norm. Why is only Lighter currently using this model for Perp in blockchain? Is PFOF the future trend? There are not many people who understand this question, so it may be even rarer to be able to answer it. I am also thinking.