Earlier quoted context omitted.
you literally don't need at all Unless you live in a place without broadcast television, or little broadcast television, and with little to no internet service. So pretty much 20% of the United States. The nation is much larger than the east and west coasts.
Are there still places with cable TV but not cable internet?
Cable internet plus OTT live TV service is probably more expensive in most markets than Cable internet plus Cable TV with equivalent channel lineup, you still have to deal with the cable provider, and the OTT TV counts against your internet data cap, if (as is likely without a same-provider TV plan or an extra payment for uncapped data) you have one.