Taimi,
Excellent point here "These organizations have not been a burden on the economy or the govt or the budget, rather it has helped in keeping people employed and contributing in the economic life cycle."
The reality is that these foundations are keeping the unemployment rate down. These foundations are in open purview of the public and politicians should they care to look at what they release each year.
For the unconvinced (not that this will convince them), here are the financials for Pakistan's largest ex-Serviceman's foundation:
Fauji Foundation
More detailed financials have been released to the National Assembly on a regular basis.