Yup, you only have to look at file formats to see how that pans out. I have 20 to 25 year old CAD drawings here with no software to read them anymore (Looking at you, Autodesk). The things we made from the drawings are still in service and will be for some time.
In years gone by every time I did a PLC program I kept a hardcopy printout - they survived longer than the equipment to do the programming and associated tapes.
Biting the hand that feeds IT
