Also remember that Toyota is the head of the Japanese Auto Industry Body.
And guess who advises the government on Auto policy?
Traditionally Honda is/was known as an combustion engine company.
Yes, Toyota is the undisputed heavyweight also owning equity in Subaru, Isuzu, Mazda, Suzuki, etc. However not the entire Japanese industry was following them.
Nissan was notably producing the Leaf, and currently has the popular JDM Sakura and Ariya internationally. Their partner Mitsubishi had the i-MiEV and currently has the fairly popular (by their low standards) Outlander PHEV in North America. Their slow ramp up is partially due to the cost to manufacture the batteries in house and ultimately selling their facilities to Chinese wind turbine company Envision (Note that the Outlander did not use AESC batteries).
Any my point about Honda, even though they are known for ICE, they still hedged their bet (although hitched onto the wrong horse).