There's no antitrust issue here. Contrary to the misleading headline, Visa didn't drop them; one credit card processor did. There are thousands of credit-card processing companies out there.
BINGO! If Authorize.net/CyberSource doesn’t want their cut of the world’s largest gun store’s take, fine. Many other card processors will be happy to oblige them.
there are thousands?? These are PROCESSORS, not merchant account providers. There’s only a handful, as far as I know. If you are aware of alternatives, please list them?