Old tech does get banned. History is littered with examples. The most prominent in my mind is leaded motor vehicle fuel - it was banned for health concerns which in turn forced vehicle makers to use engines that did not need tetraethyl lead added to the fuel. Long term this has been better for everyone. A line has to be drawn somewhere, and this instance it would seem that they wanted PSUs with greater than 85% efficiency at all levels of load, which is what an 80+ Silver PSU would achieve easily (whereas a bronze would typically not achieve this across the load range). I am confused as to why people are so concerned with this. Do you not want efficient technology?? Energy usage is a big problem in modern society and it would make sense that rather than tax people that you encourage/legislate the usage of EFFICIENT devices instead.