In the past couple of years, many people have used a streaming service such as Netflix or Hulu. Netflix and Hulu's popularity has risen a lot, and lots of people are switching to these services because they are a lot cheaper than your typical cable service. Also, some of the best shows go on there as well as movies that are always there for people to start watching, stop and then pick up right where they left off, and one gets all of that without any commercials or limited commercials.
Speaking from a personal experience, the amount of live TV has been dramatically reduced because most of the shows I watch nowadays all come from a streaming service. It is a lot easier to watch what I want when I want. Having the ability to watch a show or movie whenever I want is such an improvement over live TV because there is no having to set the DVR to record a show or having to sit down at a certain time to tune into the show live.
In this day and age where everyone has a lot to do and are always busy with something going on, it is nice to be able to go on and watch an episode of your favorite show whenever you want. If someone has a lot of time then it is also nice to have the ability to sit down and watch multiple episodes of the show.
Netflix and Hulu do a nice job of constantly updating their content with new seasons of shows as well as adding new shows for people to watch. Nowadays both Netflix and Hulu are even making their own shows. These shows offer no dip in quality of a cable produced show as well. In many cases, these shows have become some of the most watched shows around as well as the most talked about.
Now Hulu is offering an option where the subscriber can watch live TV on through their service. For example, this year's NBA playoff games can be streamed through Hulu. This is just one of the many live TV options it has available. That being said it is more expensive than the regular Hulu service, but you get both Hulu and all the options that it offers as well as the live TV options like live sporting events.
There has been a constant decrease in cable subscribers in recent months, and the best guess is that those lost subscribers are switching to other options like Netflix and Hulu. This is because of the cheaper cost but not the lower quality of content.
Due to this high change in popularity, it is clear that these streaming services have started to kill TV, and if cable companies don't change it will continue to do so.