Because on multiple levels it is cheaper to comply than losing the cash from Japanese customers.

Firstly there is the hard cash that customers won’t be able to spend on the company’s product. That’s a big red flag for any current and future investors who want every last drop squeezed into their dividends. Getting less because of costs related to compliance is just regular business in the end. Getting nothing out of spite? No, sir!

Also, trust is a resource as well: Who in their right mind would buy another product from a company that might turn off their products again in the future? This circles back to the previous argument: Less sales, less dividends, unhappy shareholders.