Again I see a example of technology advanced far in a specific area (printers) and still a dinosaur ( dot-matrix ) is still here. It also is here for the "long haul" since non of the new technology can match the speed of dot-matrix when it comes printing the widely used paper used for making carbon copies of 2 or more. In fact nothing can print like that. I have seen banks go through so many upgrades and they use flat slim monitors and other new tech stuff, but that dot-matrix is still there (shaking the making loud noise randomly and taking your print job out involved a ripping of paper. They are insulated with asphalt sound proofing material!
Although not printer related, This second example supports the idea that the job is more important that getting the best that technology can offer. This was a good question to answer.
The other "dinosaur is the car battery "lead acid, invented by a Frenchman in another century". Batteries have advanced in leaps and bounds, but the old car battery is here to stay. It keeps making itself use-full and cheap.