The phrase planned obsolescence, basically means to build things that do not last. That’s what they did when they manufactured light bulbs and many other products. Just how many products that we buy and use are planned to fail?
The Light Bulb Conspiracy, also known as Pyramids of Waste, is a 2010 documentary film written and directed by Cosima Dannoritzer. An international co-production of France and Spain, the documentary thematizes the planned obsolescence of industrial products for commercial reasons. Read more about the documentary on Wikipedia.