FX is the most liquid market in the world with over 5 trillion USD in daily turnover, and 1.6 trillion USD in OTC spot transactions executed each day on average. Volatility makes it an attractive investment vehicle for many traders around the world, institutional and retail.
Retail FX has been around for longer than 2 decades now, but we have yet to see the industry reach a mature state.
Two decades might be just an infancy stage for an asset class, one would say, and would be right.
Regulatory frameworks in many countries are not greatly fine-tuned to deal with FX or are not encompassing FX at all.