> If you pay cash vs credit card you usually pay the same amount, but the seller makes less money from the credit card sale because of fees.

And they have more labor costs associated with dealing with cash. Whether that's a net win for cash or net loss depends on the particular market that the retailer is in.

And some places pass that on too. A lot of places choose not to, but that is their choice.

Plus there's a huge gap between a 2-5% fee and a 30% fee. I imagine if Apple took a smaller cut, Google wouldn't be doing this.