Not necessarily. The director based the monsters social chain off wolf packs. But they based them off false information on real wolf pacts. The pacts that we’re studied were in captivity which alters their behavior. Real wolf pacts are simply families with the father being the lead. The children eventually grow up and leave to start their own pact while the parents either split to look for other mates or start another one together.
That said, there can be more than one alpha existing in the world. Just like real pacts, there exists more than one. Why would Godzilla control all the monsters? That’s impossible. Kong is an alpha too keeping his monsters in check and protecting them. Godzilla obviously knew the island and Kong existed so he doesn’t care about venturing there and will leave Kong to his business with his monsters. Two alphas can exist, as long as one does not encroach on the other’s territory or members. The one who loses doesn’t lose his position or pact because the pact will defend the leader.
