How did it fail, they're not available on the high street where most people buy their bulbs from (I believe this was the whole point), sure if you need a 100w bulb for a certain task or specialist reason go get some wholesale but for general household use I can only imagine partially blind people needing 100w.It seems the law to ban traditional 100w lightbulbs has failed.
They are still available to purchase for industrial use from wholesalers, and not illegal to make or import if marked "unsuitable for home use"
Another epic fail on the govts part
The good news is, the industrial spec bulbs are both more durable and last longer than the home varieties!
It sounds like you have a bee in your bonnet about 100w bulbs, either way there is no epic fail here.