Do u think people take bribe for their survival?? I don't think so. Bribes are generally taken by the people who has the power to carry out some work for the others and they are adequately paid their remuneration. To me bribe is taken by the people to meet with their ever increasing greed for money and to ensure their authority through malpractices.
Not only Islam, in every religion Bribe is Haram and not only Pakistan, in all the countries there are people who go for bribe in the name of survival.