Another product with a much longer time horizon is those electronic dial pads on apartment buildings and entry gates: https://www.google.com/search?q=apartment+door+dial+pad&tbm=...

These things are running on technology from the late 90's virtually unchanged. Even the most advanced ones are low end silicon with terrible thermal designs and horrible user interfaces (scrolling through pages of residents on a bad monochrome display one line at a time). Nothing competes with them. They have no high-failure parts and can last for decades. (And some have.)