I can't imagine how they get away with that if so. The answer to all the relevant questions (where do people go to buy apps? who do they give their credit card

I can't imagine how they get away with that if so. The answer to all the relevant questions (where do people go to buy apps? who do they give their credit card to? what merchant actually charges their card? who handles refunds? who holds the copy of the product before it's transferred to the buyer? who delivers the product?) is all Google/Apple, not the developer. This is as if a B&M store like Staples decided Intuit was responsible for tallying its own sales tax whenever the store sold a copy of Quickbooks.