If one Ersatz Monarch had been laid down in July 1913 and commissioned in 1916, would Italy respond or ignore it?
Short answerItaly would respond. Simply ignoring the additional Austro-Hungarian capital ship is implausible.
NotesThe closing question reduces the counterfactual to a conservative construction case. One ship begins in July 1913, a second follows in January 1914, and only the first enters service in 1916. Italy would respond to the additional capital ship. Its wartime constraints and the likely future of the Francesco Caracciolo programme would shape the timing and form of that response.