Exploiting misfortune like this would be a grossly wrong thing to do, like going round with a boat to fish people out of the water only so that you could steal their wallets.
Also, I would be right to assume that most Indians are apathetic towards Pakistan and its people. They have raped Bangladesh, killed thousands of Indians, send terror teams across the border, keep Balochistan under an iron grip, rape kill and miam hundreds of Balochs every year, the list goes on.
In addition, solving the Kashmir issue once and for all, would severely diminish the Armys role in Pakistan. Pakistan, as a nation, has no other aim than to hurt India.
If that happens, in no time will China start occupying Indian land.
Not an inch of land ought to be spared. Territorial integrity is not compromisable.