I think you missed my point. I'm saying that the Americans do not want Pakistan to collapse because it will allow us to start from scratch, and essentially get stronger independently over time. It will be a rough first few years. But eventually we will get through it, without the shackles of debt. Such a Pakistan - a strong, independent Pakistan - is too dangerous for them.
So to prevent a fresh start, they do not want us to default and collapse. Instead, they just want us to remain unstable, because that allows them to manipulate us through lending agencies, and through the manipulation of the political system. For them an unstable, teetering on the edge, but not quite collapsed Pakistan is the best case scenario.
I hope I've made my point clear.