Why did the Jeune Ecole fail as guerrilla warfare at sea?

Did the Jeune Ecole fail only because no navy pursued guerrilla warfare at sea aggressively enough?

No; the sea offers fewer hiding places and safe operating boundaries, while balanced fleets can counter torpedo boats and submarines with rapid-fire guns and anti-submarine forces.

The analogy between the Jeune Ecole and guerrilla warfare works, but greater commitment would not have solved the concept's weaknesses. Small attack craft cannot hide among terrain and populations as land forces can, and an opponent need not fight on their preferred terms. Rapid-fire guns counter torpedo boats, while anti-submarine forces respond to submarines. A fleet built around one disruptive method is therefore vulnerable to a balanced opponent that integrates large and small ships with the appropriate screens.