A lot of people assume that the act of decolonization usually leads to a change in the type of government, but that is a lot rarer that people think. Some changes to government happen, but a lot of times, the economic and cultural practices persist after decolonization.
I expect that this is happening in India. The British left behind an unequal society. Rather than radically reforming that society, the Indian economic and political leadership replaced British positions with Indian ones.