I believe the game was quite laggy and didnt continue because of that. Now I could be wrong but I used to play the 500 player maps in Supremacy1914. These maps became quite laggy towards the end and this would be especially worse in CoW given you started with 8 provinces in Supremacy1914 instead of the 22 we do in CoW. This would likely make the game simply too laggy to continue. But this is only a guess and hope it answers your question a little bit.
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