The more you think about it, that term is great. It makes us focus on maintenance, not building. I wonder if clock people naturally have a longer perspective because they work on mechanical things.
I will try to use this term in software development too. Wish me luck.
The subject of timekeeping is called horology. For collectors/ enthusiasts I've been trying to popularize the term hormonger, but it hasn't caught on yet.
During early watch making history the competition was between individual watch makers and the mark of a good watchmaker beyond accurate time telling, was to add more things besides time telling I.e. complications above and beyond just telling the time.