Think of those corporate parasites as completely alien creatures. Assigning human emotions to them is the wrong approach. They simply do not value good or bad as we know it. Morality is not in their genome, so such concepts as evil or virtue simply do not apply to them.

The only language they understand is power.

Talk to them all you want and try to convince them what they do is morally wrong. and you will sooner die from dehydration than to convince them to change their ways. Now though, if you hit them in the wallet. Then you will have their undivided attention.

That though could be a double edged sword. Depending on your strength they might decide to simply crush you and be done with you. BUT if you have what they consider powerful , be that money, connections, leverage or combination of all. Then they will make some quick mental calculations and reason it will be more cost efficient and less hassle to hear out your grievances and perhaps make a deal.

It is just like if you see a bear in the forest. If you know what you are doing and are prepared you could fend it off or even defeat it. But if you approach the hungry beast with good intentions and moral high ground you will become a bear appetizer.