If unethical practices become normal, the thing to do is to get a law passed. It's the way this has always worked. Laws change the entire landscape of commerce. They shake things up enough to where a new status quo is found. Law isn't perfect but it can shift the ethical regime more in the direction of the people.
The author's recommendation of a world without kings is a fantasy. If you eliminate hierarchy that means everybody must become an institution. Being an institution is not fun. It's fun to fantasize about building your own house but only the really motivated actually do it. Kings do us a favor by creating structure where there once was none. Silicon Valley is ultimately a force for good.