By reading through your and others' posts, one idea came across my mind. Everywhere in the middle-east you will find SADIA chickens. Some Lebanese company leased a lot of land in Brazil and then is doing the farming in large scale and is exporting their products worldwide.
Can it be that the Arabians are looking for similar kind of projects, such as very large-scale poultry and dairy farms in the middle of Pakistan? Can it be that chicken and animal foods will be produced in these farms? The products are then slaughtered and exported to the food short ME.
Whatever it may be, everything should not be thought in the negative light only. In the present Pakistan society some rural labours are like slaves in reality. A leasing contract may change their status. Also, the Arab lease holder may not be allowed to buy any adjacent lands owned by individuals. I think, if the agriculture method the Arabs adopt is intensive farming, which I think will be the case, there will be opportunities for new employment.
Any intensive farming requires not only introduction of machines, but also huge number of manpower. Subsistence farming which you are proposing does not create that kind of employment. Suppose, subsistence farming produce 100 ton of wheat and intensive farming produces 300 ton. Then the latter will require almost three times more labour to handle the production. Machines only cannot do all the jobs.