Reminds me of 7 years back when I was working at a major power generation company. There was a team working on restarting production of completely obsolete analog control equipment for nuclear reactors. The operator wanted to extend the life of their reactors by a decade or two and it just wasn't worth it for them to have to re-certify a modern system. The existing system had been running for decades without any serious accident, so with stakes that high and red tape that thick, they just went for "if it ain't broke, don't fix it". It was funny in a steampunk / Fallout kind of way.