According to the infant industry argument for import protection such protection is needed because

The answer is "it empowers our ensured industries to accomplish technological efficiency and accordingly end up competitive with mature foreign industries."

The infant industry argument is a financial reason for exchange protectionism. The center of the contention is that incipient ventures frequently don't have the economies of scale that their more established rivals from different nations may have, and consequently should be ensured until the point that they can achieve comparable economies of scale.