In the era of 4K HD, why can't domestic TV get rid of set-top boxes?

Now our TV has entered the era of 4K HD, but many places still use set-top boxes. This is because 4K HDTV has not been fully popularized, and old-fashioned rear projection TVs are still used in many places. If the set-top box is forced to withdraw from the TV industry market, I think it may be strongly impacted in some economically underdeveloped places; It is in this case that set-top boxes are still the mainstream of the current market. But I believe that the set-top box will gradually disappear in the long river of history with the passage of time. Of course, in addition to the low penetration rate of 4K HDTV, there are two reasons:

The first reason: there are still many places where there are no optical fibers and networks, and 4K HDTV programs are mainly realized by fast transmission networks; But there are still many places in the state of no network, so we still need to rely on set-top boxes to transmit TV signals. For these places, the stability and fluency of watching TV can only be guaranteed if the signal transmission of the set-top box is stable; If the set-top box is eliminated, it may be necessary for this part of the region to restore the era of satellite receivers.

The second reason: Compared with 4K HDTV programs, the operation process of set-top boxes is simpler, and a large number of people can't operate network TV. Technology is developing and changing every day, but it may be difficult for those who are older to accept these new things. My grandfather can only watch traditional TV programs, and the TV he bought at home is not an online version, so the operation process with set-top box is very simple; Just turn on the power, turn on the TV and set-top box, and then use the remote control to operate.

So in my personal opinion, China can't open the set-top box until now, because the market still has great demand and dependence on it. If we want the whole people to watch 4K HDTV, we need further development and waiting to realize this ideal.