If you want to take advantage of streaming services — Netflix, Hulu, Amazon Prime and so forth — you'll need a way to display them on your TV. If you have a recent TV from a major manufacturer, you may not need to get anything at all. Smart TVs usually have these apps built in, and almost every high-end TV sold within the last two years or so has smart capabilities.
During the 1990s, the pressure to accommodate the growing array of offerings resulted in digital transmission that made more efficient use of the VHF signal capacity; fibre optics was common to carry signals into areas near the home, where coax could carry higher frequencies over the short remaining distance. Although for a time in the 1980s and 1990s, television receivers and VCRs were equipped to receive the mid-band and super-band channels. Due to the fact that the descrambling circuitry was for a time present in these tuners, depriving the cable operator of much of their revenue, such cable-ready tuners are rarely used now - requiring a return to the set-top boxes used from the 1970s onward.
As cord-cutting has picked up steam, many cable companies are offering their own "skinny bundle" packages with internet and a few channels for less. It seems counterintuitive, but in 2018, "cutting the cord" can still mean sticking with your current cable company. The important thing when comparing these services is to look at the contract requirements and extra fees. Even if a service price looks the same as many all-streaming packages, if you need to tack on an extra TV box or two the monthly fees will add up quickly.