It seems like there are constant updates for 20 year old packages on my Ubuntu systems. Ubuntu 20.04 Focal Fossa (first released April 2020) glibc had an update on 2025-05-28. Current stable updated glibc 2025-09-22. To say nothing about the rest of the packages in that operating system.
Oh, look at the time, a few more CVEs in C code, posted 3 hours ago to Hacker News: "X.Org Security Advisory: multiple security issues X.Org X server and Xwayland"
https://news.ycombinator.com/item?id=45790015
https://lists.x.org/archives/xorg-announce/2025-October/0036...
To torture the analogy: perhaps the "returns" are diminishing, but their absolute value is still a few million bucks, I'm happy to take those returns.