I went to an escape room in eastern Europe recently. The escape room was a lot of fun, we booked two rooms that were mostly science focussed (one was about Nicola Tesla and the other was a lab where you needed to find the cure against a zombie invasion).

I talked to the owner a bit, and he said that their room was also part of a franchise. They sent the floor plan of the room to the game provider and received the full instructions for setting up the room, as well as a shipment of all the electronics and other stuff needed for the puzzles.

Of course every "instance" of such a room is unique in some way. But all in all it seems to be a good concept - a company with some smart people comes up with interesting puzzles, and escape rooms all over the world implement those ideas in an actual building.