Do firms internationalize because of the efficiency advantages that they enjoy or because of the power that firms can derive from being international?

Do firms internationalize because of the efficiency advantages that they enjoy or because of the power that firms can derive from being international? Do firms internationalize because of the efficiency advantages that they enjoy or because of the power that firms can derive from being international? The topic question basically is saying: Do firms nationalise because of power reasons or because of efficiency reasons ? write this essay choosing the "power reasons", support the power and criticise the efficiency (e.g. difficulties in achieving efficiency).