There's a big difference between production installs and personal systems or hobbyist systems. Think, there are lots of businesses running Cobol on mainframes, there are machine shops running on Windows XP, there are big companies still running java 8 and python2. When you have a system that is basically frozen, you end up with catastrophic failure where to upgrade X you need to upgrade Y which requires upgrading Z, etc. You'd be surprised what even big named companies are running in their datacenters, stuff that has to work, is expensive to upgrade, and by virtue of being expensive to upgrade it ends up not being upgraded to the point where any upgrade becomes a breaking change. And at the rate technology changes, even a five year old working system quickly becomes hopelessly out of date. Now imagine a 30 year old system in some telco.

These are such different use cases that I think completely different standards and processes as well as build systems are going to become the norm for big critical infrastructure versus what is running on your favorite laptop.