His wealth also comes from abusing his workers which might have made a few liberals upset once upon a time:
http://www.theblaze.com/news/2017/11/27/undercover-reporter-reveals-brutal-working-conditions-at-amazon
"Alone in a locked metal cage, 10 feet from my nearest colleague, a robot approaches from the shadows and thrusts a tower of shelves towards me.
"I have nine seconds to grab and process an item to be sent for packing – a target of 300 items an hour, for hour after relentless hour.
"As I bend to the floor then reach high above my head to fulfill a never-ending stream of orders, my body screams at me.
"Welcome to Amazon’s picking floor. Here, while cameras watch my every move, a screen in front of me offers constant reminders of my 'units per hour' and exactly how long each has taken.
"...Amazon does not have to enforce 10-hour workdays of heavy lifting.
"Instead, the company could hire more people and add more staff to help lighten the load.
"But that isn’t likely to happen, he concluded, because Amazon makes more money by treating workers as people who are easily replaced by the next wave of new hires."
Bezos is simply the latest parasite in a long line of capitalists who build "their" fortune by exploiting human labor.