This was a very big problem when smart bulbs were first introduced. There now are a number of different ways to address this so that you can still have a switch at the wall where you expect one, but it won’t Cut the current to the bulb.
It may still be less expensive to use a smart switch and dumb bulbs, but for places where you really would like the color capability, including warm white to cool white, there are many more options available now in 2017 then there were one or two years ago.
