> It's a... different development trajectory.
My two cents: the rest of the world is highly westernized. If you consider Islam a western religion (which you should, since it's a derivative of Judaism, and is a cousin to Christianity), then basically all of the Middle East, Central Asia, and North Africa was westernized with the Islamic conquests. Sub Saharan Africa has adopted western norms wholesale after colonization (no written language, so very hard to keep old customs). Later, China adopted communism (a western ideology), which made its way into parts of Korea and Southeast Asia, and Japan / Philippines were colonized by force. India actually stands out as never having undergone much of a western colonization. Obviously, the entirety of the Americas are the result of Spanish/British/etc colonization.
India stands out as the only country to have never been properly colonized, with a long written record. A lot of economic theories we have are really not universal truths, but things that only hold true in the global monoculture. That's why India's development trajectory is so different, and why states like Kerala basically defy all expectations (even if it's 'communist', it's 'communist' in a non-'communist' federal framework).
Again... my highly controversial opinion. I don't really pay a whole lot of attention, but this is my take.