In a blockbuster move, Fox agreed to acquire Roku in a $22 billion cash-and-stock deal, combining a major broadcaster with a platform used in roughly 100 million homes. [P]The marriage gives Fox direct access to Roku’s distribution and ad data, turning a passive set-top into a potential powerhouse for content control and advertising — and guaranteeing a regulatory and industry tug-of-war. Think less rom-com, more merger musical: lots of singing, complicated choreography, and everyone hoping no one drops the mic.