Oh boo fucking hoo, you petty ass. You have no idea if these companies are not being called out more or not, do you? To begin with, most of these companies are in Japan, which obviously requires a US subdivision for any customers to place their complaint in and if they don't have one, where are the complaints are going to go to?
Since Hollywood is the one who wants to adapt these stories, they too have responsibilities for diversity to be represented especially if they want to sell this story to the US, which has diverse population, and the world, which is even more diverse. Hollywood is also the one with more clout, more power, more access to public, which is why they have been designated target for protest.
Because at the end of the day this is about money and power and there's no way a small company in Japan can resist the offer of their property being used by Hollywood. It doesn't mean Hollywood is exempt from being tasked to be diverse.