According to a new study, subscriptions to streaming TV services exploded by 450 percent in less than a decade. This has resulted in surge of cord-cutting, those who cancel their cable or satellite packages (pay TV). The result is that pay TV household penetration has collapsed from a years-long hold of 75 percent, to just 63 percent in 2017. In 2009, only 10 percent of homes subscribed to a streaming TV service (Amazon, Netflix, Hulu, etc.). By 2017, that number surged to 55 percent, or a 450 percent increase.