@TheDog said:

Would your super-dupa placementAnyTerritory fix

Thanks for the thought. This hack helps with the placement of factory/construction type units which were not placed by the AI's normal purchase-placement routine. Here the problem is with purchasing, which the AI is not doing because the AI does not find when to start a simulated purchase. Without creating a purchase, there is nothing to place.
For my testing, replacing "placeNoAirCheck" with "place" does allow the AI to make purchases but this does not seem to work for @rogercooper. I'm not replacing the delegate "NoAirCheckPlaceDelegate" with the "PlaceDelegate" as there would be no change in my testing. So maybe @rogercooper could test if changing both the name and delegate makes any difference.

Cheers...

@wc_sumpton
Would your super-dupa placementAnyTerritory fix,
https://forums.triplea-game.org/topic/3326/1941-global-command-decision-official-thread/1005?page=51

aid the AI into purchasing?

@RogerCooper

To test, I updated TripleA to version 2026-9.16.15785. Uninstalled and reinstalled world-war-i-1914-improved, which included both World War I 1914 Improved and World War I 1914 Tournament Rules.
Using Fast-AI for all players the game ended at round 8 with the Allied Powers declared as the winner. The AI made no purchases during the game.
Using Hard-AI for all players the game ended at round 11 with the Central Powers declared as the winner. The AI made no purchases during the game.
Inside the xml there are 9 occurrences of " placeNoAirCheck" which were replaced with "place".
After reloading World War I 1914 Improved, Fast-AI was selected for all players. Round 1 the Austro Hungarians purchased 6 infantry and 2 artillery. Russians purchased 3 infantry and 4 artillery. The game was stopped after 15 rounds with no one declared as the winner. All AI players made purchases during the game.
Using Hard-AI for all players, the game was again stopped at round 15 with no winners. Austro Hungarians made their first purchase in round 2 with 10 infantry and 6 artillery. Russians purchased 20 infantry and 3 artillery on round 3, having made no purchases during rounds 1 and 2. During the game all AI players made purchases.

Cheers...

@wc_sumpton I tried all players as AI using the World War I Improved map.