Almost all of us serve people whom we do not know, and even of whose existence we are ignorant, and we in turn constantly live on the services of other people of whom we know nothing.
If they can provide a better service to their customers, then they're likely to get more business, which in turn creates more business for us - everyone wins.
My sister, in turn, would be amazed with both the depth and excitement of my experience, as well as my modesty in thinking of the stories as nothing special.