Arch rivals Amazon, Flipkart and Snapdeal have formed a united front for the first time to raise concerns over the coming Goods and Services Tax (GST), which they fear could hurt their businesses. The founders of Indian e-commerce firms Flipkart and Snapdeal, Sachin Bansal and Kunal Bahl, will join Amit Agarwal, the India head of their fierce rival Amazon, which has been grabbing their market share, to voice their concerns on GST to the government. They have sought help of trade body Ficci, with members who are from traditional sectors, whose business have been disrupted by the new economy firms. Joining these in the representation would be other players,such as Paytm, Grofers and Zomato,among others. Taking acue from old economy, established e-commerce unicorn shave finally decided to form a united front to discuss with the government.According to sources, interestingly, it was Ficci which,as a pre-condition,told the start ups that the only way the industry body would represent