One great advantage of old software that has been continuously developed by the same core of people is that when new features are added, they have the benefit o

One great advantage of old software that has been continuously developed by the same core of people is that when new features are added, they have the benefit of being informed by all the past failures and near-misses. And they are almost always features that are actually new. New software, otoh, hasn't been through a 40-year shakedown cruise.