History. They don't make vhs players or CRTs now do they? Even though they had huge benefits to modern (vhs, recordable and durable, CRT, durable, repairable, instantaneous response and perfect blacks) digital convenience trumps all for the majority population. Its also about control. You literally cannot buy a non smart TV any more (OK fine, digital signage, but you won't get a remote) and some of them will not even function unless you connect them to WiFi. Hekk no.