An Indian employee's salary being 1/5th of an American's, doesn't mean their cost to the company is only 1/5th. There is a general organizational/overhead cost

An Indian employee's salary being 1/5th of an American's, doesn't mean their cost to the company is only 1/5th. There is a general organizational/overhead cost to taking on more people. This cost, for one additional person, may be higher than even the American's salary