Laptop/desktop hybrid

One of the advantages of laptops over desktops is the absence of cables and separate components. At a minimum, there are monitor cables, mouse cables, keyboard cables, and speaker cables. So why not have a desktop computer where the computer is built into the monitor. The keyboard too can be built in and fold down from the computer. Or both the keyboard and mouse can be wireless, and the computer have built in charging bays. The only cable is the power cable to the computer.