See also: https://en.wikipedia.org/wiki/Phoebus_cartel https://en.wikipedia.org/wiki/Phoebus_cartel > The Phoebus cartel existed to control the manufacture and

See also: https://en.wikipedia.org/wiki/Phoebus_cartel https://en.wikipedia.org/wiki/Phoebus_cartel > The Phoebus cartel existed to control the manufacture and sale of incandescent light bulbs. They appropriated market territories and fixed the useful life of such bulbs. … The cartel tested their bulbs and fined manufacturers for bulbs that lasted more than 1,000 hours.