Yes, you are right about competition and economic rivalry. However, the south asian counries need also a kind of mutal cooperation. Competition can be accomplished by allowing the free flow of goods, knowledge and technology. But, this is not happening to these countries, and mutual cooperation is also almost completely absent. In realit, mutual cooperation has been taken oer by mutual distrust. It is all because of bad politics.
BD needs at least its electricity shortage problem to be resolved. Once there are an ample supply of electricity, the private companies will keep on building new factories, employment will rise and consumer market will grow. A double digit growth is not impossible after, say, five years from now only if more electricity is available in the country.
Whatever it may be BD standad of living is much higher now comparing to what it was before 1971 war. The country is on right track except its domestic politics. It is not far away when BD will become the 2nd largest economy after India. It is already showing the signs of further growth and achievements.