After months of speculation, Anil Dhirubhai Ambani Group, is close to launching its direct to home service, Big TV as early as next week. And with a fierce competitor on board, existing market players, Dish TV and Tata Sky are looking at new ways to diversify and maintain market shares. A Big TV spokesman confirmed that DTH services will be launched soon and as expected Tata Sky and Dish TV are already gearing up for competition.