Society determines what "shoulds" turn into "musts," and currently our society does not have any "must" for general cultural or social good. Only fiduciary responsibility. That's the structural cause here and should be the focus of attention

I'm not a worshipper of Mammon so I disagree that it basically all comes down to money.

I agree that many people are, I'm just arguing that they're wrong.

>That's why we have workers' rights.

Wrong. Being perpetually employed is not a right.

There's a massive difference between being perpetually employed and being fired for no reason at a job you've already demonstrated your ability at.

>being fired for no reason at a job you've already demonstrated your ability at

???

Curious to learn more about how would one ethically justify that?

No one owes nothing to another (aside from what's protected by human rights).

You owe everything to other people. What do we owe to each other is literally a joke question in things like The Good Place.