As of November 2023, I'd say the top 3 are OpenAI, Anthropic, and Google (I'm sympathetic a case could be made for Meta).
Appreciate EU is not a country, but I think it's useful to track in the aggregate anyway :) - feel free to add individual EU countries, or to ask if you can add other useful groupings (I might N/A groupings I don't consider that useful if things get out of hand).
For simplicity, I'll focus on the country of the lab or its parent organization (at the moment, that means I'd count Google as 100% US, rather than viewing Google DeepMind as a UK lab).
I'll look to exit the market in the months prior to resolving, to reduce COI.
@CalebW Added. Maybe it’s worth stating explicitly that it excludes Hong Kong and Macau but it includes Taiwan. Also Singapore counts as south-east Asia.