It’s free shipping. I know people don’t like to hear this. The market for mobile “shippers” is more competitive than that in the physical world, in fact.

The analogy is not perfect, but if one objects to this then one objects to Amazon or vendors offering free shipping, which is a benefit that puts them ahead of competitors, and (might) lead the consumer to include it in their decision-making.

This also shows the tension between neutrality advocacy and consumer benefit. In a PR sense, it’s very hard to win, when most consumers only see the benefit. (I happen to side with consumers on this.)