The streaming and media wars continue with yet another big acquisition: Fox Corporation is acquiring Roku for $22 billion.The two companies announced the deal before markets opened on Monday morning, with Fox saying it will pay $160 per share in a purchase that will combine cash and Fox stock. The deal is expected to close next year. Roku is perhaps most widely known for its streaming devices and hardware, but it also runs a streaming channel, The Roku Channel, which has its own slate of origina...