Unfortunately, eco-friendly houses are a tough sell to the general public, just like eco-friendly vehicles are. That makes ideas like those above take hold very slowly, or fizzle out and die altogether due to (as stated above) lack of interest.
Granite, cherry wood and stainless steel are sexy. Led lighting, foam insulated panelization, high efficiency appliances, sustainable products, xeriscaping, etc . . . . not so sexy. Buyers are looking for instant gratification, they don't want to hear about the benefits of double-insulated argon filled windows that have an ROI of fifteen years, since most people are only planning on owning a house five to ten years.
As for myself, I've always wanted to build a straw bale adobe walled house. It may never become a reality, but time will tell.
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