This is possible, although economies of scale also play a role here; they probably sell like a thousand Smart TVs for each signage display. I like to think howe

This is possible, although economies of scale also play a role here; they probably sell like a thousand Smart TVs for each signage display. I like to think however that for that higher price I'm actually buying a better durable product that will pay in the long run: 4K will last for a while, and by keeping things separated, other potential weak points (incompatibility with new formats or standards) are left to the tuner/mini PC, which would cost a lot less than the screen to change, or possibly nothing in case of software update.