the future of LED lighting

Here's an article reminding us that the uptake of new technology is not just about the technology itself. Some people see LEDs as the future, with CFLs as an intermediate technology that will soon be replaced. Others suggest that even the old incandescent bulb will never completely disappear. We still use candles, don't we? Everything seems to have its place, but whether through market forces or regulation, some things will be discouraged. The question is what? and how?