> Now an old fashioned light bulb shouldn't be expected to last a decade, but an oven? Funnily enough, there actually was the Phoebus cartel [1] which sought to reduce the lifespan of incandescent light bulbs to around 1,000 hours and raise prices. [1] https://en.wikipedia.org/wiki/Phoebus_cartel
The 1000 hours limit is in practice a lower bound to a combination of luminosity and efficiency