One data point from the above-linked Technology Connections video: decades after the end of the Phoebus cartel, the lifespan of most lightbulbs remained at 1,00

One data point from the above-linked Technology Connections video: decades after the end of the Phoebus cartel, the lifespan of most lightbulbs remained at 1,000 hours. You could get longer-life bulbs, but they consumed more power for a given amount of light, which made for a more expensive total cost to the consumer.