The lost technology of not having trillions invested in finding the lowest possible bar that can be sold at the highest possible price with extremely high accuracy
>A new thing sold in the 50s which can't be serviced nor repaired by yourself and is actually expected to be replaced entirely within 5 years for reasons you cannot affect
If it existed it was exceedingly rare. Now people sort of want to buy a new phone every year. Most feel it's gone to shit within 5.