I’ve been thinking in many ways we’ve already established wirearchies, it may just not be very visible or evenly distributed at this point. What I’ve been muddling over for a while is what comes next? Is there another “phase” we’ll go through in the next 5-10 years?

Yes, I think so too, Joachim. What hasn't changed and needs to change is the leadership & management philosophy (its underpinnings) and the various methods it employes to manage the structure it embodies. All that is increasingly obsolete, as it is used to define, design and manage people whilst they are working at contributing and creating value (a service, a good, some needed component or participative conduit of an human ecosystem. In my opinion that's what is yet to change .. whilst people are already connecting and collaborating and cooperating and co-creating.