New Delhi, June 30 -- Being an entrepreneur is more rewarding than being a paid employee in any of India's 46 cities with population in excess of a million (2011 census) than in urban India as a whole. Such million plus cities may also be more attractive to migrant workers, especially in India's blue-collar economy, because they offer more opportunities than smaller cities. Between these two facts-released by the National Statistics Office (NSO) as the first ever statistical insight on labour markets in India's million-plus cities - lies an important and perhaps troubling inference: India's large cities attract workers less because of economic dynamism and more because of the sheer advantage of their size. Much of the migration would not ha...