Eh, for a lot of businesses, the few percent they pay in card fees is worth it to avoid handling large quantities of cash. Cash is a pain in the ass to actually work with on a large scale. Collecting it, counting it, securing it, keeping employees and random criminals from stealing it, etc. Plus lots of cash allows employees to steal from both the employer or the customer by giving bad change deliberately.

Not that businesses shouldn’t accept cash, but there is a reason a lot of them don’t want to mess with it. It’s an enormous hassle.