Not to mention safety is only part of the issue. Economics are changing quite a bit as well. These are established and mature technologies which have traditionally competed for the base load power generation. The immature energy technologies are about to drastically change our energy landscape. Last year manufacturers of solar cells doubled their manufacturing capacity.
Energy efficiency is also an immature technology.
Under the EPA's Green Lights program, numerous companies have rebuilt their lighting systems with payback periods of around 2 years. Considering that large scale facilities look at technologies with 30 year paybacks as being worth it, a payback period of only 2 years tells me that we've only begun to scratch the surface. It doesn't anticipate what's about to happen.