"Could" is the operative word. No doubt one or two of these materials will be incorporated into structures which will then inevitably win sustainability awards. They won't however be used mainstream which is where the problem lies, for more eco friendly materials to become established rather than a "gimmick".
The builders on the ground are reluctanat and skeptical to use things other than the standard norm and generally normal people are ignorant through lack of knowledge of the new products.
Solar panels need to become alot more efficient to be incorporated into new structures on a major scale as well as retrofitted into old.
Also "sustainable" concrete - they mean that they can use less valuable aggregate and cement by using a waste product to take the space, I remember seeing some research that proved strength is affected however this isnt an issue when maxium strength isnt a problem, like on smaller builds.
This is another type of sustainable tech from a lecturer I studied under at Leeds:
http://inhabitat.com/bitublock-concr...l-be-obsolete/
Whether normal people will like houses made from this is another matter!