The French ministry opened an investigation to find out where the customers were getting their supplies. From which supplier in the neighborhood were they getting their Bitcoins? After three months of investigation, they discovered that the gathering point for Bitcoin dealers was not at the bottom of a dilapidated city, but on Binance - "among others" -.
They even discovered that you could borrow crypto, which didn't go down well with them. So they decided to shut down futures trading for the French.