2/ in federated network governence is function of network topology. If it grows, some nodes (servers) will likely get large (since there are per server network effects, economies of scale), giving them disproportionate control. you end up back where you started.
3/ in blockchain based systems line FC and Lens, governance is formalized and (logically) centralized blockchain level. Governance is independent of network topology and therefore resistant to some nodes getting getting large.