So its mainly centered around credit cards, ok. Yes this is the current pinch point where serious pressure can be applied by regulators, the fiat on/off ramps.
Looking to the future many blockchain technologies are on the path to becoming digital banks themselves so you can just on-ramp directly into the ecosystem rather than using a CEX like Binance.
Binance are like any financial institution, no-one really knows how it works and what dealings are done behind closed doors. In my opinion they are a temporary necessary evil until we fully move into the digital asset era.
