I think that a lot of us are interested in the concept and the practice of decentralized exchanges, but it seems that there still is this lingering and possibly unsolved risks involving potential reversible transactions.

I really think that bitcoin atms and Circle are like comparing apples and oranges.. .sure they are both fruit, but they are different.

It is likely that Circle created a model that was not sufficiently profitable, which may make it a bit difficult for some service to come into their space and to take over the services that Circle was providing at the approximate rate that they were providing.