The phrase "to cut the cord" means to stop relying on something or someone completely, usually referring to ending dependence on a particular service or resource. Full definition
I think I am about 3 to 4 years out from being able to cut the cord on being an «employee». (financialsamurai.com)
However, in the past year, many middle - class families are cutting the cord for good because of more affordable options. (creditdonkey.com)
Almost 500,000 people cut the cord in the fourth quarter, shrinking the audience for pay TV by 3.4 % from a year earlier, the largest decline since the trend emerged in 2010. (fortune.com)