The main cause of the problem is because our government failed to make the country to be less relying on foreign products. We are importing goods more than necessary. In technology we lag behind and the foreign nations are innovating new products that we continue to import.
You said it all but government fails to understand that this the problem of the economy challenge we are facing today. Nigeria depends on importation so much that they are not ready to make their own. Even most of the products made in Nigeria we don't even use them and we look down on it. This is what government need to look into but it is as if they don't know where to start from. This government really needs to do something to make the economy better, than trying to do things that have nothing to do with economy.