Comcast operates large-scale broadband network, cable television, and media entertainment businesses. Through physical cable networks, it provides high-speed internet access and video subscription services to U.S. homes and businesses. Concurrently, its subsidiary NBCUniversal owns and globally distributes film and television content, operates news and sports broadcasting networks, and manages Universal Studios theme parks. The company relies on network subscription fees, advertising placements, and theme park ticket revenues to sustain its massive operations.