You are practically correct about that last thing, though I must point out that never is too strong a word: http://en.wikipedia.org/wiki/Tupolev_Tu-144
Re:It Flies: Da Vinci's Dream Comes True
by run4yourlives on Tuesday July 26, 2011 @12:22PM
(#2808061)
Never as in "commercial success". Closer to reality than the 144, which was pretty much a government money pit, was the Beech Starship (http://en.wikipedia.org/wiki/Beechcraft_Starship). Again though, not able to see any real success.
For that specific example however I was thinking civilian aircraft, in which canards would be a huge step forward but are never seen.