Yes since its one of the largest people automatically turn to them to purchase crypto. However if you can imagine the journey. You are fortunate to buy crypto with credit cards and you get hit with say 1.5% fee then you buy Crypto with a 1.5% fee and if you dont have GDAX to transfer it out of coinbase then you get hit with another fee for miners. So before you have even started you have been bombarded with 3 transactional fees.
No there are companies like robinhood (US only so far) and bread wallet that are offering other opportunities to buy crypto without these fees.
I will check them out. Thank you!