Non taken- and yes, they could have been finished had German production not switched to U-Boat production. What is it with this nonsense about Montanas all the time? We KNOW US American production is FAR greater than any other State's- but this has never been disputed. What has been disputed was that the H39 was not meant for production nad was just a nice "design on paper" - which is not true.
Edit: Besides- The USA has never had to face "Wartime" conditions like i.e. Germany had to face, so a comparison beyond this topic is moot.
If you mean we were never stupid enough to pick on somebody 10 times our own size you are quite correct.

So why bring that strawman argument into the debate?
Fact, they were never completed.
Fact, they could NOT have been completed given Germany's resource avaliability.
Fact, Germany's industrial capacity could NOT produce all items required by the armed forces of Germany.
Fact, the only credible threat on the seas the Germans could have made was with U-Boats, so not producing the surface fleet and concentrating on the U-Boats was the best option available to them at the time given their resource and production capabilites.
Fact, even with slave labor Germany was critically short of manpower so HAD to concentrate its labor resources accordingly. The Surface fleet was not as high a priority as the Luftwaffe and Wehrmacht.
So, you are still basing your entire debate on the word 'IF' pretty shaky grounds to be basing a debate on. Only propaganda and wishful thinking does that. Neither of which is useful in convincing others that your point of view for a historical debate is sound. Only demagogues believe points of view based on IF.
As for the 'nonsense' about the Montanas, (the H Class is just as nonsensical) is that they were a far superior design to those German designs, yet all we hear about is the 'superior' German design. Once again both German and American designs were, and still are, fantasy concepts. Historical Fantasy is the promotion of an idea that did not happen in the real world as if actually having occurred. And too often we hear non-sensical historical fantasies based on the word IF thrown around as if it had actually occurred. I am just setting the record strait.
Sorry to bust your bubble W.I.N.T.E.R. but the sad fact is that neither your German fantasies, or my American ones will ever be true, and to claim them as historically significant is not facing the facts.
Cheers, Thorgrimm