They’re called digital signage displays. Those module slots are usually in the intel SDM form factor.
This stuff is expensive as these displays and modules are rated for 24/7 operation and the software they ship with by default is specifically made to manage content on a large fleet of them.
You’re honestly gonna get a way better experience for cheaper by getting a normal TV + a NUC/Nvidia shield and just not connecting the TV to a network ever.
Modding used to be extremely easy and detection systems weren’t implemented yet back in the day. I have an account with billions in cash just for being in the same lobby as one.
These days you’re still free to ruin everyone’s day with all sorts of griefing mods, but once you try and spawn in cash daddy rockstar gets angry at you.