People absolutely are tools in the eyes of their employers. I've never been at a company and not heard them refer to employees as "resources" when talking about scheduling and allocation of people. There's nothing special about humans in a factory compared to robots other than our ability to adapt and learn. But as robotics and AI/ML get better that gap narrows until you reach a point that the robot is "good enough". That same robot might be a little slower than a person at first but it's operating for a fraction of the hourly rate and it's doing so 24/7 with no breaks and no slow downs.

Your point about millions of displaced people rising up and being unhappy is 100% valid. But you'll be hard pressed to find any company willing to sacrifice a slice of their earnings to employe people just because it's the right thing to do. Especially in the US where the entire culture is based around corporate profits only ever increasing at a rate greater than inflation. The US is in one big race to the bottom to see who can shave $0.01 off the sale price of their product. That naturally leads to two things. Monopolies and hyper efficiency. Because when your profit margin is pennies per unit you have to move one hell of a lot units to make hundreds of millions a year in revenue.