I disagree with the 4K being a theoretical need thing, but it’s moot because where I work, every desk has a pair of 4K monitors that connect to the user’s laptop via a single USB-C cable. That cable also connects a keyboard, mouse, gigabit ethernet connector and, depending on the desk, multiple cameras and conference audio and, of course, charges the laptop. At the moment that’s mostly done using USB-C docking stations, but we’ve started to deploy monitors that are USB-C native and can be daisychained together.