Indians can't tolerate a prosperous Pakistan, irrespective of controlling IoK.
Even if India removes 370, Kashmiri freedom movement will carry on. Pakistan will still support them.
What the Indians are and will continue to do is to paint this as 'Pakistan dumped Kashmir' but Kashmiris will not buy that.
Kashmiri movement will be fueled further by formal integration of GB, as per the request of GB residents.
And Chinese veto in UN means that India can't really do anything there.
Tough times ahead for Hindu elite who were promoting Akhand Bharat.