That is a monitor, of course. However, I seriously doubt there is anything more than the bare minimum hardware required to drive one display. You may be under-estimating the level of shoddy work that happens for these kinds of displays.
A server to host one menu is a bit overkill, actually. While I could be wrong, I really think the only requirement for the franchise owner would be "a digital display with some kind of network connection".
Then again, the IT work could be top-notch... I doubt it, but it's possible.
I know someone who works with kit like this. It tends to die impressively rapidly. Apparently raspberry pies are particularly bad (yes, the client was THAT cheap).