First I did not see it -but- the "robber barons" back then were way richer and more ruthless than the big shots of today....and that's a fact.
Build America? Ever work in basic steel where it's made? That's where I got my start, hot, dirty and very dangerous but it paid pretty good.
I also worked in a secondary finishing mill making flat, angle and shapes from slabs and billets.
Then a plant making railroad tank cars plus repair shops that fixed them including the waste treatment plant.
All now are shut down BTW. Steel largely went overseas, tanks were made in brutal low wage non-union shops.
Who really built America? How about "The Greatest Generation".