“Replace management with robots” is a fun bit, but it endorses a faulty premise, which is that the point of automation is to save money.
Automation isn’t cheaper than human labor; sweatshops are plenty cheap. Automation is a weapon in the war against workers who demand anything better than sweatshop conditions. It’s a tactic to entrench and centralise power.
Because this is the thing: corporations are not driven by profit. That’s how they want you to criticise them, because in a capitalist society, the profit motive is always excusable in the end (“Chevron killed all those people in Ecuador for profit, but hey, everyone’s gotta eat”). The more you deride them for seeking profit, the less heat they get over their true agenda, which is rent.
Jeff Bezos isn’t rich because Amazon’s retail business is so profitable (it isn’t). He’s rich because anyone who wants to sell stuff needs Amazon’s permission to do it. Amazon don’t deserve that power, but they have it, and the system pays tribute to Bezos because of it. Essentially, if he wants a yacht, global capital will buy him a yacht, because he is the feudal warlord of the land of retail. It has nothing to do with whether Amazon’s warehouses are efficiently run or not, but it is affected by how much of an iron grip Bezos has over his serfs, which is why Amazon will burn money on vaporware deivery drones to discourage those serfs from unionizing.