Not quite, BOTW was already premium priced in Europe, and the price increase in Japan isn't as big as in the US. That, and more people going with vouchers (which still results in more money since digital = no cut for retailers + distribution + packaging), so it's not that simple a bit of math.
But yeah, still a great deal of additional money for them
That's Nintendo's integrated Hardware + Software approach at work. Strong HW sales combined with high-quality software from popular IP that have been carefully nurtured (often for decades) (+ no sales split between console and handheld platforms) =