The two countries, Italy amd Germany, did have carriers and while not operational, had intentions to put them into service.
Poor planning, poor timing and a lack of defined leadership doomed the respective programs from the start.
Even the French lacked a clear goal in their carrier program, the WWI era Béarn being their only operational carrier during the war.
What I find interesting, is that the Netherlands did better with their two Merchant carriers (Gadila and Macoma) than Germany, Italy and France put together!