The main flaw with this claim, at least for tech, is that there remains a CEO, and more importantly that the CEO is the agent of a board and a set of investors.

The main flaw with this claim, at least for tech, is that there remains a CEO, and more importantly that the CEO is the agent of a board and a set of investors. In this context the notion of "flat", "non-hierarchical" is a farce since real authority always rests outside of the group to ensure investor returns.