The export is not enough to finance the acquisition of guns. The consulate is more like a second metropolis than a military building. The export is a trickle and in treaty it practically does not accumulate, and also the units you hire take a long time to arrive. I think India needs to create anti-infantry guns in her castles; also improve the range of their camels with rifle (zamburaks) because they are faster than elephants with rifle and can attack cavalry in a more versatile way such as dragons. Elephants do not replace cannons at all since they are extremely expensive and occupy too much population, they also cost a lot of wood, which in treaty is the most scarce and precious resource after 40-60 minutes of play.