ISRO wasn't too high up the to-do list for our government either and during the 60s-70s India and pakistan's economy weren't that different.
ISRO had started off with literally nothing.
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You will need real vision if pakistan wants to become a true space faring nation. Decide 30-40 years in advance, integrate educational institutions and various other state organizations, make new organizations, not fear failures, not let the pakistani missile program hold SUPARCO hostage, resources wise you'll need to sacrifice a lot, absolute political will from all political parties and in pakistan's case army as well.
A few tests here and there and just depending on bigger nations isn't going to cut it. We saw first hand that no matter how much of an ally you think your ally is, they won't help you indefinitely and in the end you are on your own.
It is constant uphill battle. Like......
The time is soon upon the world when space too will be weaponized, and pakistan is already late in that front.
And if SUPARCO isn't thinking of launching a PSLV type medium lift rocket in the next 10-20 years then pakistan is already too late.