Now that we have LEDs, which were marketed to last "forever" when they were introduced, but clearly don't; and running LEDs at lower specific power actually helps efficiency, but they don't.
Phoebus being about efficiency was merely a coincidence.
LEDs have an average life of about 10 years from what I've seen. Yes, their efficiency decreases, but I'm not sure that's such a big thing.
And at this point who really needs "forever"? We're getting to a point where the average person will at most change their lighbulbs 2-3 times in a home (I doubt the vast majority of the population lives in the same place for more than 20-30 years).
Actually:
> Report Highlights. The average length of homeownership is 16 years, with lower-earning and less educated householders more likely to remain in their homes longer.
>And at this point who really needs "forever"? We're getting to a point where the average person will at most change their lighbulbs 2-3 times in a home
Why does that seem fundamentally more reasonable to you then each occupant replacing the walls just once?
Phoebus being about efficiency was merely a coincidence.