Caring solely about money often has the side effect of making others' lives better. Amazon gainfully employs over 500k [1] people, giving them means to put food on the table. Not saying that wouldn't happen without Amazon, but more job availability is always better than less. Bezos just became the richest man ever recorded [2].
[1]: http://money.cnn.com/2017/10/26/technology/business/amazon-e...
[2]: https://news.ycombinator.com/item?id=16108295