It doesn't quite work that way, especially in northern latitudes where the difference between the "longest day of the year" and the "shortest day of the year" is greater. The whole idea is to shift the clocks to maximize the availability of sunlight during normal waking hours. That is: try keep sunrise somewhere in the vicinity between 5:30 and perhaps 7:OO AM. Stick with just one setting year 'round, and it's either going to be rising too early in the summer, or too late in the winter to maximize availability and use.
In a way, it surprises me that in even more northern latitudes, such as up in Canada, don't shift their clocks by an even greater amount, perhaps 2 hours. Or more frequently, perhaps in one hour increments four times a year instead of just twice.
Why not twelve times a year?
Or set your clock every day?
I am passionate about this. I can order my activities around natural sunrise and sunset. I hate the biennial and legislated disruption