Sports fans are an ideal market to sell 4K content to in its early stages, say analysts, though at least one expert says this quality of video has not yet achieved "must-have" status. Richard Grunberg, associate professor of media at Ryerson University, said in a phone interview that most consumers see the transition from regular high definition (HD) to 4K as a less dramatic change than the move from standard definition to HD. He added that content producers are already creating content in 4K, making them ready for when the 4K market goes mainstream. A few years ago, when the...