Why you say India can sustain growth for longer than BD? Remember BD gross debt is around half of India's and so BD has more fiscal scope to borrow money in order to increase GDP growth.
Larger countries have greater scope in maintaining growth. Larger countries have bigger budgets, so they have bigger militaries and greater space ambitions which they can use to further growth.
In the future, India will be among the biggest space players, so mining and colonization of space will be led by India and other large countries. The bigger military will enable greater power projection, so other smaller countries will want to befriend the larger country, that will led to greater economic prospects for the larger country in terms of trade.
In case of natural disasters, larger countries are insulated from the damage. Resources from undamaged areas are transferred to damaged areas quickly. Even disaster response is faster. Contrast the situation in BD in 1970 to today. Casualties have fallen drastically since the past, all because of India, ISRO in particular.
North Korea is communist and not a good example.
China is communist too, and also homogenous. So growth comes from economic policies, not from the type of population.
As for Indonesia, it's economy and politics is lead by the Javanese who comprise 42% of the population. While not a majority, they clearly have the numbers to lead the rest of the nation with relative little opposition. In India no ethnicity comes anywhere close to the Javanese and so no strong leadership is possible. Indonesia is not exactly a glowing economic success as it only has 40% of the GDP/capita of neighbouring Malaysia that is lead by the dominant Malay(60% of population) ethnic group. Lastly a part of Indonesia(East Timor) has already become independent and no guarantee that other parts will not go the same way in the future.
India is not affected by ethnicity like other countries are. We had a Sikh PM for 10 years, now we have Modi who is from a backward caste. Sonia Gandhi is an Italian Roman Catholic, her children Rahul and Priyanka are Hindus. APJ Adbul Kalam was a Muslim President. The PM in 1991 who opened up India to the world was a South Indian Andhra PM called Narasimha Rao who studied in a college setup by the Nizam and carries a Sanskrit motto.
India is a political entity and not an actual nation like BD.
You can't apply your prejudices in India, it simply won't work.
Even though BD only become independent in 1971(24 years after India), it already leads India in indicators like life expectancy and malnutrition. As BD becomes richer, then it's government will have more and more money to create the infrastructure necessary to propel growth to even higher levels than now. India has two many layers of bureaucracy to make the fast decisions to try to keep up with BD.
BD will become richer than India in per capita income only if BD grows faster than India. But all top studies show India will lead the chart for many years.
Even if India's socio-economic quality may not rise as fast as BD's, India will still continue to be bigger in per capita income for many years because of the difference in other qualities and opportunities that Indians have, like education, healthcare, access to high end technologies, access to other countries, access to resources etc.
McMeal at McDonalds, Cappuccino
Loaf of fresh white bread rather than flour,Marlboro cigarrette,Volkswagen golf price,Tannis court,Nike running shoes were selected.But the down trodden masses like us, these are non issue.
