This was the Phoebus Cartel where the major light-bulb manufacturers all agreed to do this: https://en.wikipedia.org/wiki/Phoebus_cartel https://en.wikipedia.o

This was the Phoebus Cartel where the major light-bulb manufacturers all agreed to do this: https://en.wikipedia.org/wiki/Phoebus_cartel https://en.wikipedia.org/wiki/Phoebus_cartel But I guess in the end the free market did bring about it's demise, when Scandinavians produced cheaper alternatives.