In January 2016, the most ‘poriborton’-friendly gentry of West Bengal huddled together under their eccentric but benevolent chief minister, Mamata Banerjee. They held the second Bengal Global Business Summit, with political bigwigs imported from Delhi—finance minister Arun Jaitley, railways minister Suresh Prabhu, power minister Piyush Goyal and roads minister Nitin Gadkari—joining an A-list of corporate honchos to tempt the elusive unicorn of private investment into the state.