"Dell 75 4K Interactive Touch Monitor - D7523QT":
* https://www.dell.com/en-us/shop/dell-75-4k-interactive-touch...
"Dell 65 4K Interactive Touch Monitor - C6522QT"
* https://www.dell.com/en-us/shop/dell-65-4k-interactive-touch...
Use-case seems to be conference rooms.