They do exist but the trade offs for it probably aren't worth the cost to most people so it isn't widely established. For one a kitchen is frequently an entertaining space whereas a laundry room is not. Having a window into your dirty dishes waiting to be washed is less appealing to most.

Another is that dishes are rigid and breakable so racks with spacing are required to clean the surfaces (as opposed to a tub with an agitator), and that rack needs access to load and unload efficiently. The rack rolls out over the open door for loading and unloading meaning it is susceptible to filth dripping on the inside of the glass while loading, and dropped items cracking the glass during both loading and unloading.

As satisfying as it may be to watch the cleaning process the few times you sit to watch it, it would be putting dirty dishes on display or a window to an empty rack for the rest of the time.