Their population is multiplying like rodents and there's not enough resources to sustain that failed state. No one will allow pakistan to collapse as it would cause the worst demographic and humanitarian crisis for all of the world, including India with millions of them desperately trying to flood europe, middle east and even India albeit shamelessly against their "do qaumi schizophrenia". You bomb them back to stone age, it'll become to us what afghanistan is to paxtan, i.e. a major perennial pain in the rear, you let them thrive and develop and they'll have enough resources to finance their jihad against us with decent diplomatic backing, essentially re-creating the scenes of 2000s and 2010s of regular major terror attacks on Indians inside the mainland and sustainment of Kashmir jihad and Kargil type intrusions, all of which were done when pakiland wasn't in the mess it currently is in.
Only favourable solution for India is the mess paxtan is in right now, being bitten by it's own rogue investments in Afghanistan and pashtun hinterland, while having a perma-screwed TFR levels as their population growth is extremely unsustainable and arguably an impending disaster in making due to extreme water and food scarcity and dependence on remittances and alms for survival. Their WMD programme being decapitated should be the long term unfinished goal along with to neutralise the warfighting capability of the fauji foundation, to the point it's good enough to keep together their failed state and can sustain only a fight against the tehreek-e-taliban and baloch freedom fighters if their proxy warfare against us is to be neutered and long-lasting deterrence is to be established.
I guess.
