Well, I think if large groups of people (companies) are collaborating, some degree of hierarchy should be maintained. While, yes, even if all employees are reasonable adults, it would still benefit their shared objective if there is structure in what they are working on, and when.
The 10:1 ratio I mentioned was just to illustrate that the free college proposal implicitly assumes but explicitly ignores a "natural hierarchy". I also think workplaces should be more egalitarian than they are now.