Anti-fraud measures for inherently insecure mag stripe are really tilted in favour of the big operators who can afford a well-skilled fraud shop or a provider who’ll happily charge millions per year in licence fees. The difference in fraud-to-total-dollars-transacted between a big player vs something like a credit union can be 20x, especially if there’s a major counterfeiting campaign. And it’s generally considered a social good not to make things easy for organised crime.