The “lightbulb conspiracy” refers to a notorious episode in the history of planned obsolescence, centered around the Phoebus cartel of the 1920s. This group of major lightbulb manufacturers, including Osram, Philips, and General Electric, deliberately engineered shorter-lived lightbulbs to boost sales and profits, reducing bulb lifespans from 2,500 hours to just 1,000 hours.
https://www.perplexity.ai/page/the-lightbulb-conspiracy-story-S5lrHLMqQAKtBjfO.ozdJQ