[mindslight]

That's not actually libertarianism; it's crypto-fascism. There is no distinction between a totalitarian government and a perfectly "libertarian" company which owns all land and property, so true libertarians must be concerned with how power is actually distributed.

Tech giants have scale and effects on par with government, especially as these "independent" companies tend to make decisions in lock step. Thus libertarians should be primarily concerned with the rights of the distributed actors within these ecosystems.