Nintendo did put EarthBound and EarthBound Beginnings on Wii U but I think the most anyone could hope for is an official localization of Mother 3. I haven't played the games myself.
Weren't you talking about Nintendo as a whole company?
Their largest market is the US.
Nintendo, the company sells way more games in Japan than they do in the US. The only time the US surpass Japan sales if you include Canada and Mexico in 2014 where they made 2.1 Billion USD from those 3 countries compared to 1.7 Billion USD in a their home country.
Edit: More physical copies of Mother/Earthbound were sold in Japan. I misread your earlier comment.