i just did a simple calculation, about 35k bitcoins are traded on GDAX every day. At its current price of $6900 and a trading fee of 0.3%, the exchange puts about $700,000 in its pocket EACH DAY and it is ONLY for bitcoin. After including all other cryptos, this number can go up to more than $2MM. Since the exchange is active 365 days a year, the exchange's annual revenue can reach almost $1bn!!
they do make a lot , like really a lot but there is some expenses of course also the legal stuffs require money
but even after expenses they make a lot of money , still we don't see a single exchange with good support system so basically they are making tons of money and not giving a damn when their customers need them
