TLDW: The Phoebus Cartel established 1000 hours as a baseline to get maximum efficiency. longer lasting bulbs would require WAY more power per hour to operate while producing less light.
Planned obsolescence is indeed a thing, but using this as an example of it is incorrect and discredits the overall argument. It's better to focus your attention on right-to-repair laws for your $2000 laptops and $40,000 tractors than on your $2 light bulbs.
