Siri and Alexa aren't speaking my language

I use the Amazon website nearly every day in Japanese; the company probably has a pretty good idea by now of who I am and what I'm into. Last month I even used an Amazon service that offers expert wine advice over the phone, which is quite understandably not available in English. But if the Echo came out here, I would likely have two choices at best: use it in English and miss out on the deepest integration with Amazon's fast-growing ecosystem -- I wouldn't be able to ask about most Japanese products or services in English, for example -- or use it in my second language and miss out on the ability to interact with Alexa as naturally as possible. Granted, the Echo sounds cool enough that I'd still probably buy one even if I could only use it in Japanese. But its functionality is one-way and focused on the home; it's not a mobile communications device.