More like, you don't sue a vendor and then expect the relationship to go back to status quo ante.

A chargeback is essentially binding arbitration and it can be existentially costly for small businesses, especially those unable effectively to advocate for themselves in a fairly complex and little-known process. Excess chargeback initiations - even of failed chargebacks - will also get acquirer accounts closed, meaning the business formerly a client of that acquirer can now no longer accept credit cards. (Modern acquirers like Stripe also do this, because the card issuers and payment networks will eventually cut them off if they don't: Stripe is not "too big to fail" according to Visa, which is why you may not sell sex or porn via Stripe.)

Anthropic doesn't need to care, of course. No one is going to fire them as a customer over excess chargebacks, and a hundred such fees are still cheaper than one hire. Anthropic has a burn rate. Chargebacks impinge much more heavily on businesses that need to earn money selling goods or services. It's important not to confuse one with the other.