I’m saying even if the Pakistani companies are worthless at increasing exports, trans-shipment of raw afghan minerals to Gwadar (or Karachi) could fund this rail project on a sustainable basis over a long enough period of time. If Pakistan gets its act together, it could ship domestic products via rail and off the roads, and make this project viable on its own. $7 billion is a large amount of money, but not in the grand scheme of things, if done as part of a long term plan with other industries growing.
Except ML1 does not go to Afghanistan. Someone has to invest in the railway links from ML1 to Afghan mines.
$7 billion is not a huge sum of money. It is the ability and the intent to generate economic activity. If the objective of the new economic activity is to prop up Pakistani military coffers the game is already over before it started