Typically in any human population - mango man or mango Abdul will not be able to "see" prosperity that is hundreds or thousands of miles away in order to be "jealous'. He can only hear stories of wealth elsewhere ("
The streets of London are paved with gold") and know that he and all the people around him are not wealthy. He will know that tapping that faraway wealth will mean emigration, leaving behind the safety net of family and village. Only in the most trying circumstances will entire families with women and children move. Otherwise it is typically able bodied men.
However if he has a fabulously wealthy village headman, or is able to visit a nearby place housing fabulously wealthy people he will be able to see that wealth and may have some aspirations of becoming wealthy - knowing that wealth is possible nearby. He will want a share of that wealth in the form of a job - i.e he will give something in exchange for a share of wealth. So if he gets steady employment with a fabulously wealthy person - he may still not feel jealous - he may in fact show great loyalty to that wealthy person because of his privilege in being useful to that person.
But if a very large number of people are poor and a huge number cannot get jobs of means to survive it ends up reflecting back in the villages. "Crunch times" for a family that is already poor comes with the death or injury of a wage earner. Overnight the family is poorer. Over weeks or months of poverty the people who are must vulnerable to illness (and maybe death) like small children begin to die. Typical response to this sort of situation is migration of men to wealthier areas looking for jobs requiring the low skills they have (typically low paying jobs). If jobs are available they congregate in slums and either manage to send money back home, or eventually start a family in the slum. When the supply of men seeking jobs is far higher than the employment available you start getting crime. In a sense this creates more jobs - because the wealthy respond to crime by creating jobs like security men or a police force. But when the supply of able bodied males is far larger than can be handled you have an uncertain, possibly explosive situation.
Ideally this situation must be avoided by
1) reduction in the rate of growth of population - birth control and birth spacing
2) generation of employment locally in the villages
3) A mechanism for addressing grievances
The situation in Pakistan is one of predominantly feudal estates where entire villages are in land owned by someone else. Stability over the centuries has been there because the land has been kind enough to give the residents enough to eat even as the wealth goes to the landowner. Islamic society (and Hindu for that matter) in fact encourage the acceptance of what one has as either being one's fate or what Allah has pre ordained. Imbalances are not to be messed with. The average Pakistani is a fairly docile God fearing person who accepts that it is Allah's will that he should live as he is, Just as it is Allah's will that the land owner owns land. All the wealth and happiness will come in jannat. For those who believe in religion you can see what a huge con-job religion does to populations of people

It is not surprising that the fathers of communism understood that religion can be a massive con job. But as long as people are under the spell of the concept of a "God" they can be controlled and asked to eat more sh1t than is their fair share. That is what is happening in Pakistan. In fact a lot of tribulation in Pakistan is blamed on Hindus. Hindus, massacres of Muslims, massive migrations etc are all the fault of India and her bigoted Hindus. This is a story that has been sold to the people of Pakistan and to tsk-tsking sympathetic westerners including the likes of Stephen Cohen. This is the story so far.
But what of the future? The facts are a repeat of what I have written before in my ebook. Modern medicine did something in the 20th century that was never achieved before -i.e it reduced the death rates of infants and children. Most people outside of medicine will find the achievement difficult to comprehend because they will not know how many killer diseases there are that kill infants and children and how they have virtually been eliminated - primarily by vaccination and public health measures. Human populations started exploding in the 20th century because of this. Countries with huge populations have desperately sought to reduce the rate at which children are born because they are no longer dying and it is a huge job to provide food and employment to the millions who are being born (and not dying). Those of us who admire China today rarely mention the draconian measures that China undertook to stabilize its population growth. We see the shimmering glass towers of Shanghai more than we "see" the hundreds of millions of Chinese who were NOT born because of a one child policy.
The Islamic Republic of Pakistan has no political will or power to check population growth in Pakistan, which is growing rapidly - with the growth rate being among the highest in the world. And along with this population growth - human development indicators are getting worse. Such growth indicates that there will be a huge mass of men who will be ready to take to crime if nothing else is available. The task of managing them should be left to the Pakistani government/Army. We need to close our borders to migration and shoot anyone who tries to come across.
It is certain that this population will be a burden to Pakistan. If Pakistan is divided up, they will be a burden to the daughter states, and if those daughter states are going to beg India for help they will be a burden on India. How Pakistan will handle this population remains to be seen. The problem is not new - it is at least 30 years old. Thus far Pakistan has handled them by directing their ire against India, or the Soviets. Pakistan should have foreseen this and should have started addressing the problem in the 1970s itself. But the US (which does not care for any foreigner other than the "center of gravity") kept the Pakistani wealthy in a state of well fed happiness as long as Abdul was cannon fodder for America's wars. America is now desperately paying the Paki army to get their own Abduls under control. The American method is bribes and military control and this is being followed by the Paki army. What is required is peace, settlement, education, jobs and birth control. None of the latter are happening. While NWFP go into turmoil Paki cities are becoming megapolises like Karachi and to a lesser extent Lahore where the government does not exert full authority except in protected conclaves.
India may not be much better - but it is certainly a little better and there is widespread acceptance of facts like birth control and development. This has little to do with relative percapita GDP. The same problems will exist whether Indian per capita GDP is 0.9x Pakistan's or 9x Pakistan's per capita GDP. We have to look after ourselves and it is Pakistan's job to manage Pakis.
Pakistan has become such a nightmare that merely defeating the Paki army and RAPE is not enough - the population is a problem. But the Paki army and the US have still not managed to break out of the vicious circle where the US pays the Paki army to use its Abduls against the US's enemies while some are aimed against India.