I actually downloaded a few of those museum apps a few years ago and somewhere along the line they broke down and were never replaced or fixed. With the rapid rate at which Apple updates their OS, why should any institution invest in it and for what number of viewers?A scenario: You go into a museum with your Apple Glasses on. You start up the Museum's app and look around. Coming up to a painting, a sign appears next to the painting which explains the history of the painting. The app is using image anchors to anchor virtual content to the image of paintings throughout the museum. Once the image is recognized, the virtual content is displayed next to the painting along with a virtual button to turn off the display of information.
I'm not saying it won't happen but there is a very real cost to those exhibits.