What is stopping Pakistan from cleaning its house, jailing and getting rid of corrupt bureaucracy and political class, and jump re-starting the industrial base that it has which is just rotting away? You can match the numbers by building your own.
You spend a whole year's cotton production output in order to buy two second hand F-16s. But instead you can build multiple quantities on your own and not have to rely on limited variants that you spend so much $$ on, which come with back doors and strict parts control anyway.
If the generals can afford to buy private islands, then Pakistan can afford many more things.
Such defeatist mentality is not helpful tbh.