If they’re on the fence already, then they should be doing it. A few hundred dollars a day means next to nothing to McDonald’s, and everything to the workers. Don’t hold the threat of automation over them, if it’s gonna happen rip the bandaid off.
It’s not a matter of a few hundred dollars a day. It’s a matter of whether the decision to replace workers is NPV positive. It’s clearly only so up until the point they are at now with the kiosks.
A few hundred a day means a lot to the franchise owner. It really means a lot to the mom and pop pizzeria down the street or the owner of the convenience store.