Now the only issue left is whether US or India, the biggest loosers in this situation sit back and accept their logical fate in Afghanistan? IMHO highly Improbable. They would fund and weaponize the uprisings against Talibans like ISIS Daish. The biggest question is, Would they be able to turn Afghanistan into another Iraq or Syria? Obviously it's vital in the national interests of both the US and India to keep Afghanistan in complete chaos and unstable as much as they can. They still prevail in global media propaganda warfare, US still can keep bombing Afghans after they fully evacuate from Kabul.
Because stable and prosperous Afghanistan would prove to be the last nail in the coffin of the US and India's hegemonic dreams. China and Pakistan would get vital trade corridors into Central Asia, Russia, Europe through Afghanistan. Alqaida may get stronger in India and Kashmir is already slipping out of Modi's control.
If US says China is their biggest adversary then I highly suspect that their future battlefields and prime target of cold war 2.0 would be Afghanistan and Pakistan for sure. Don't know how Pakistan would finesse through this great game?