IMHO these are the keys why we lost:
1) We really bit with the spy game - the number of late game parts being hit proved it. We needed to build those spy buildings a lot early.
2) This is another game where I don't understand why people won't use the whip. Mound city with one shield is really stuck on my brain. That city has awesome cottage, but NO production. That city should have been whipped like clock work every 15 turns.
3) Our economy just sucked. Part of it was not whipping the multiplier buildings, but there was more that I don't understand.
4) Not founding Aluminum Co in our Wall Street city hurt. So did my founding Mining Inc not realizing the overlap problem. However, both of these were late game, and IMHO we already we in trouble.
I am open to comments from other players where we went wrong.