CoinBase is a terribly run company. I had the pleasure of using them for 6 months. Their support does not exist. Half of the transactions are held for a few days. The reason why they are still running is that they got the license to operate such business in many states. The moment someone offers the same but with actual support... their business will suffer.
Yeah just start a competitor, the licensing alone is something like 3 million... There's very little competition in the space and I guess there are reasons for that.