Handling cash isn’t free either. For small businesses, there is the staff wages for the extra time in handling cash (banking it, counting/reconciling each till, getting shrapnel to refresh the float, theft/loss, slower sales transactions), and for large businesses, some of the above plus Armaguard/Prosegur security services.
The 1% merchant charges don't help, but even if that was significantly more than the cost of cash handling, it doesn't sum up to the 7% or so inflation rate.
I didn't say it summed up to the inflation rate, pls don't simplify my post like that.