@jwcph sorry to infodump, but I want to make one last point.
Have you met the general public? If they are presented with two light bulb options, one of which is longer lasting, they will probably pick it. Big number better.
They are not going to do the research to figure out that a longer lasting light bulb is dimmer, so if you fill your house with those light bulbs, you'll need higher power bulbs to get the same amount of light.
The limit prevented ignorant people from making bad choices.