Ark is cool, but the biggest concern for me is the capital requirement.
To put it into perspective, to achieve Visa scale, the ASP has to anticipate 1 month of payment volume, which is roughly $1T.
In the case the state is weak, Ark can work, but fedimints work even better: scale much better, are more private, and high competition keeps everything in checks.
In the case the state is oppressive and strong, Ark is fucked because only a few companies can have that much money, which means the state can go knock on their doors.
