Treaty ratios can trigger a construction race

Would a different treaty ratio have been accepted?

It would likely force wider allowance increases and could accelerate British, Japanese, and American capital-ship building.

The proposed change cannot be isolated to Italy and France because Japan would demand an adjusted allowance, which in turn would affect Britain and the United States. For Britain, a higher entitlement would open room to replace older ships with more Nelson-type battleships and potentially F3-style battlecruisers, changing the scale and character of the programme.