I highly believe this would talk out about forex and stocks trading and i had read up about these percentages too.I dont know if that
one is accurate or not but they do really have the points to this very volatile market even we do talk about traditional markets like forex
where profitability would really depend on how you do play with the market.For crypto space i do believe that it is much higher
rate when it comes on making money.If it werent profitable then we cant see those multi-millions of daily volume on exchangers.