Maybe, but 5G has the potential to be a game changer. Cell phone companies would be compete with cable for office/home connectivity since the last mile would be delivered via radio not cable. I think TMob's purchase of a TV provider is part of an overall plan to compete with cable for connectivity and content. ATT/Time Warner will be there as well. It also means companies like Alphabet can get into the ISP game by leasing tower space or buying bandwidth; thus delivering things like search and YouTube TV directly as well.
At some point I expect to see devices, such as Apple TV, Smart Tvs, having 5G built in and bypassing WiFi altogether; if 5G lives up to its speed promises.