Why would retailers care? They are not making money from the payment information; the credit card company is. Further, they're not making money from the fact th

Why would retailers care? They are not making money from the payment information; the credit card company is. Further, they're not making money from the fact that people use the credit card; it's again the credit card company. I don't think that adding a surcharge for cash purchases (or, more realistically, a "discount" to credit card purchases) would make much sense economically? (Except in situations where handling cash is especially inconvenient, e.g., buses, vending machines, etc.)