as both MarvK and Frank S describe, new products alter previous installations; some with complications, benefit to others. WE are lucky to invest toward that kind of capitalistic first world variety of privilege.
The earliest bulb change phenomena I saw was in SoCal, a highway crew serviced towering light standards in Anaheim, where 91 and 5 freeways intersect. They could be 300' + high. Most commuters probably never gave it a thought (same that consider daycare centers, public art projects infrastructure)). The fixture might contain 8 lamps, weighs at least a few hundred pounds, bulbs size of beachballs.
Yup, all it takes is a winch; fixture center is a ring that rides down the post.
Bet they'd have been used earlier, but no one figured how to change bulbs; some little kid probably "how about like a flag pole?"
I hope he was paid well.