If he fixes it, the prices will rise, making Amazon less wonderful.
I also like going to restaurants where there's a required 20% gratuity that gets distributed to all staff and helps pay for employee benefits. I think the overall service, interactions, and experience are far better at those restaurants and I'm happy to pay for it.
I feel the same way about Uber. My family was out of town on vacation and we could have gotten the bus for $10 between the four of us but we paid over twice as much for an Uber.
I wouldn't notice if Amazon charged a few percentage more. I use it for convenience and selection.