People are followers of jobs. They gravitate towards the region where these jobs are created. Apparently, it just can't be the other way round. Have you ever wondered why is there massive migrations of people from the rural regions to the urban cities? It is simply because of search of jobs that ain't available in those remote areas, and they are aware that with such migration, they open up themselves to the endless opportunities in those cities regardless of little or no qualifications.
Moreso, the people are also in the know-zone that once such a move is made, they avail themselves the rare chances of enjoying all the social amenities that are concentrated in the cities. Things like quality education, pipe borne water, electricity, motorable goods road, etc.
In summary, people are followers of jobs because it is in their nature to always seek for greener pastures where their quality of lives can tremendously be improved.