To be fair, the % of GDP argument is really hard to quantify along the axes being used here. If India wasn't a colony, wealth would not have concentrated in GB

To be fair, the % of GDP argument is really hard to quantify along the axes being used here. If India wasn't a colony, wealth would not have concentrated in GB, likely slowing Down their development and Maybe even making them more open to local conflicts. Provided the French or Dutch didn't conquer more of India, and, it's hard to argue that wealth remaining in India would have not have resulted in more trade and local development. We can definitely say that having someone come to your country, and clearly stop you from building the best product you can build, sell or pruchase, impoverishes your country.