It doesn't balance out; nefarious usage is going to cause many, many tiny harms that are harder to detect, and many larger harms that will be excused, up to and including denying that beneficial use of indentifying tumors, because algorithms are going to be presented as beyond reproach.
Beyond detecting union affinity, maybe someone will also makes its ML twin that predicts how much they can underpay someone.
It's not just the bottom line; too much of Amazon's practices rely on treating humans as more expendible than styrofoam packing peanuts. It's a culture of control and expediency, and it's a feedback loop because the only way to rise in that culture is to be for more control and more expediency.
Workers with no legal protections or fallbacks, can be coerced to do things that are self-destructive out of fear, or they can be screwed out of benifits or protections through the same banality of evil as EULA agreements.
Management culture has some serious fucking problems. When I worked a factory job, the latest managerial fad was 'make workers mad enough to quit'. Because if they quit, they lost their vested retirement benefits. And those that came back, did so on reduced pay. Deplorable? Yes, but _perfectly legal_, or if not legal, the power imbalance was such that the company could get away with it scott free.
Crap like this goes on all the time, see an example FAQ lawyers put up: https://www.kentonslawoffice.com/workers-compensation-lawyer...
Lawyers working in worker compensation law are not likely starving for clientel, or they'd be seeking greener pastures. Hell, yellowpages.com shows 23 hits for 'worker comp lawyer' just within a ten mile radius of where I live.
Corporations are amoral profit-optimization engines, externalizing all possible costs to everyone else. Corporations are not people. Corporations do not think like people, even if they are made of people. Corporations do not care about people, especially not in any of the ways we would want someone who is our neighbor to care about us, not even to the bare minimum of polite indifference of not pooping on your doorstep.
Given a choice between the nebulous future of preventing provable harm, and the shorter term and slightly more concrete consequence of lost profits, corporations (and even government) chose profit.
If corporations were actual people, they would absolutely poop on your doorstep to save on their water bill, and then gaslight you with studies showing that poop on your doorstep is normal and healthy, not a big deal, and totally your own fault if it is.
The only way to made corporations (and government) behave in morally acceptable ways is to force them and watch their every move, and make the alternative more expensive.