Yes we will, that's why I don't criticize things like elec cars and such. Sure they're a bit of a pain now but technology marches on and I'm reasonably sure they will get improved to the point where they can be a viable replacement, they're just not there yet.
What I do criticize is the doom and gloom, the world is coming to an end the day after tomorrow, we're all going to die if you don't completely change your lifestyle by this afternoon, the science is unquestionably settled, panic crowd.
Also, they need to stop pushing tech that's not ready for prime-time. Let the electric cars and solar power and LED lighting mature. People will adopt them when they become better tech than what they've had before.
But no, they'd rather make things political. They'd rather push CFLs, and make everyone sick of them, and then push half-baked LED bulbs on everybody, and do it all over again.
edit: I guess I'd better clarify, since people like to argue about light bulbs so much. I'm not disparaging LED bulbs. What I mean is that LED lighting is one of those technologies that was rolled out too quickly (i.e., government and misguided eco-alarmism got involved), so that too much early-gen LED stuff got out there. While it was not as bad as the ill-fated CFL twister bulbs, it did turn off some people, or at least give them the wrong idea. In my job, I often hear people talk about how "bad" the light is from LEDs, because too much LED was sold, before they got the color temp. and CRI issues sorted out a little better. Now, those people think there's only one kind of light from LEDs, and it's not the good kind. I also know a hardware store that hired someone to replace their fluor. tubes with LED strips, and then
went back to fluorescents, when those didn't work out. There are much better LED retrofit products out today, but it's gonna be a while before they're ready to try LEDs again. I suspect they're not the only ones.