No organisation should become bigger than the role that is envisaged from them. Moment that happens, that nation would face acute problems.
It could be political class, judiciary, bureaucracy etc etc. In any nation, with decent governance a balance remains. There can be minor ups and downs but nothing major.
Paksiatn was unlucky, since it didn’t have leaders of unmatched standing after early demise of Jinnah. Military grabbed that opportunity and claimed to have filled that void.
Rest is history.