Good review and informative.
With technology and a need for it we move forward to better alternatives. Productive numbers in mass will make the end product cheaper and affordable. The way of the future is through break through science and technology. Loved reading your post mate well done.
Moores law hopefully will work here, I think that is what Elon is hoping for, not only with Tesla but his other company solar city which wants to put cheap efficient solar panels on a large majority of roofs in the future.