The disadvantages of 16K resolution are the need to have a powerful processor and video card for video playback. At the same time, a simple user, with enthusiastic viewing, may not even notice much difference between 4K, 8K and 16K.
If we talk about games, then in general it is possible to run them in 16K. However, now this resolution can be achieved only through converting from 4K to 16K. And yet, no graphics card at the moment can provide ideal graphics.
From game consoles, in theory, 16K can be played on the PlayStation 8 or PlayStation 9. It would be nice if these platforms are released by 2035.
Today only Sony have 16K TVs. This model costs about $ 10,000 (730 thousand rubles). Such permission may become really popular only in 2035.