It’s been mostly called AVoIP, I don’t know if I’d recommend for menus at a bar, it’s more of an easy way to change inputs to multiple displays, before with hdbt tx/rx pairs, you had to have either a switcher that had hdbt inputs/outputs (usually limited ports) or all your tx/rx pairs in the rack feeding into a switcher and a control unit telling the switcher to switch. With the avoip, it’s just a control unit and arranger connected to the network switch. It’s a little slow but it’s still developing.

AV over IP is the latest trend in the commercial world actually.