Libertarianism is an oligarch's wet dream because it has no checks for this kind of private abuse.
Oligarchs thrive by controlling government and using its power to further their interests. They despise libertarians.
And when you have no check on private power, private power is concentrated among the hands of the few.
Private power isn't coercive. Government power is. That's the difference you ignore.
Absolute horseshit. Again, another grand libertarian failing is their comically naive concept of 'consent'. It doesn't matter if you're being utterly exploited, being paid in 'company money', being cheated, making a choice between selling yourself or death......if you say 'yes', you'v offered consent. And the oligarch can do *anything* to you. Anything at all.
That's the libertarian conception of 'consent'. Where by any rational standard, exploitation, discrimination, abuse, and coersion render consent a spectrum. Not the childish binary that libertarians imagine.
Again, we've tried pretty close to your system. Slavery, abuse, coercion, indentured servitude, company stores, private armies, and the systematic oppression were the result. Libertarianism is a wet dream for the rich and powerful. As it eliminates virtually all constraints. There is literally no degradation, no abuse, no exploitation, harassment, manipulation, injustice, discrimination, fraud or oppression that a libertarian won't abide....if the person under the boot of the powerful is forced to say 'yes'.
And of course, in addition to the wasteland of weakness and inexcusable acts of willful ignorance, there's one more Achilles heel in a political philosophy that's virtually all heel:
concentrating power in the hands of a handful of the wealthy and powerful will inevitably lead to political corruption and the erosion of the very ideals that libertarians value.
There is no way that this system works. As ANY concentration of power left unchecked will be abused. And libertarians in their naivete will address nothing but the possibility of government abuse. They completely ignore private abuses, despite our own history overflowing with them. Guaranteeing that private power will be concentrated and left unchecked.