Earlier quoted context omitted.
Other resource-rich countries haven't fared as well. Indeed, it is a truism that the more natural resources, the worse a country performs economically. Some of the wealthiest countries are deprived of natural resources (Israel, Singapore, Monaco, and others) while a bunch of resource-rich countries have done poorly or terribly (Brazil, Argentina, all of Africa, India, Russia, and others). It's what you do with the st…
India is hardly resource rich. Especially not per-capita.
It's a remarkable achievement to maintain a united, democratic, mostly peaceful nation for 70 years straight (and counting). Most former colonies collapsed into destructive civil war, then military rule, within decades of independence. India has so far avoided that fate. Heck, most developed European countries have barely managed to avoid it in the past century.
India has as much (probably more than) linguistic, cultural, ethnic and religious variety as the European continent, far lower levels of education, absurd amounts of competition for resources, education, and jobs due to population pressure. All of those things are potential triggers for conflict and civil war.
I can't comment about other countries that may or may not have lived up to their economic potential (Brazil, Argentina, Russia etc) because I know next to nothing about them. But India is doing terrifically well, considering the hand we were dealt.