Ok, hands up. How many of you have managed a large maintenance division, much less on the size of Disney with maintenance of an area twice the size of Manhatten? Not many hands there. Think about how many light bulbs there are at Disney, hundreds of thousands maybe. That means bulbs are burning out all the time. The only way you can manage that problem is by having maintenance schedules, you could never keep up with every bulb as they burned out and some, like the ones in the pictures, undoubtedly require equipment to be scheduled to fix them. It will be always easy to see lights burned out if you go looking for them in a place that large.
Oh, did I mention at one point I was a manager in the services (read maintenance) division in a hospital with a campus the size of MK with more than 20 buildings? The only way we kept up with burned out light bulbs was with maintenance schedules and there were always non-essentials that were out somewhere.