This document summarizes the evolution of the IT industry in Bengaluru and reasons for the failure of the industry in Kolkata. It explains that Bengaluru's IT industry grew due to the presence of top engineering institutions, liberalized computer policies in 1984, and multinational companies establishing offices there. However, Kolkata's IT industry failed to thrive due to terrible work culture, rotting infrastructure, low productivity neutralizing low costs, and decades of misrule damaging the city and deterring business growth. Politics and a poor government did not support developing an IT sector in Kolkata.