Maybe my memory is faulty, but I never remembered having to pay a surcharge to use a credit card. Now everywhere I go there are signs saying that there is a 2.5-3.5% surcharge to use a car (and others that say that there’s a 2.5-3.5% discount for using cash, I assume to get around wording)
Yeah.
It’s less trouble for, like, a two-person food truck. Perhaps that‘s what OP is seeing. But cash quickly becomes plenty of trouble.
Credit cards have hazards too though, like chargebacks/fraud. I read some horror story about that sinking a healthy business.