If you don’t want to become that which you despise, you must design your systems accordingly.
Multi-user federated servers are inherently open to economies of scale and thus to embrace, extend & extinguish.
Fediverse servers should be designed _so they cannot scale beyond a certain size_ to ensure no node becomes a centre.
If your aim is to devolve wealth/power/control, vertical scale is your failure mode. If you want to raise mini Zuckerbergs, by all means, scale on…