More that I remember the companies I dealt with back then, and the products they made which I bought. Many of which would remain static far longer, with readily

More that I remember the companies I dealt with back then, and the products they made which I bought. Many of which would remain static far longer, with readily available spares available in stores, alongside the new sales. There was some decent effort to use common spares across multiple models, often for decades unless something transformative required a major change. I could compare and contrast in just about every sector I can think of. Sure there were some abuses, notably some of the car makers come to mind. The needs of the customers -- beyond making the initial sale -- were far higher up the priority list than today.