Smart bulbs versus light switches
It just occurred to me that bulbs with integrated switches could kinda sorta have a purpose. If you designed the house around them, and didn't have any physical light switches, the electrician's bill will be a lot smaller - less wiring, fewer wall boxes.
Of course it would be bloody inconvenient to have to use a remote / smartphone to turn on your lights on/off, so personally I wouldn't care how much money it saved up front. Of course, you can still get all the physical switches (even if they are 'virtual' and communicate with the lights rather than cutting power on/off) but then you lose the savings AND pay more for your light bulbs AND have to worry about security issues if they are wifi addressable instead of some more sensible like X10. So still a stupid idea marketed to the stupid.