Rather:
How many politicians or bureaucrats should it take to change a light bulb?
None.

How many citizens should be allowed to choose?
Everyone.

The 45 lumen per Watt end-regulation DOES BAN all known general service incandescents, including touted halogens (that only reach around 25 lumens per W)
A simple cheap effective technology to produce bright broad spectrum light is thereby destroyed.

Besides,
apart from affecting people’s product choice,
the actual switchover savings are not that great anyway =
less than 1% of overall energy use, and 1-2% grid electricity is saved, as shown by USA Dept of Energy, EU statistics and other official information
http://ceolas.net/#li171x
with alternative and more meaningful ways to save energy in generation, grid distribution or consumption.

Light bulbs don’t burn coal or release CO2.
Power plants might.
If there’s a problem – deal with the problem,
rather than a token ban on simple safe light bulbs,
light bulbs that people obviously like to use
(or there would not be a “need” to ban them)