Somewhat ironic, considering that I just saw their own 3DS Badge Arcade, which costs $1.00 for 5 plays of a highly luck-dependent claw machine game, to win icons that you can decorate the home screen with (and sometimes custom themes.)
Nintendo has kept scummy micro transactions to a minimum for as long as I can remember. Even Pokemon Picross had a maximum spend on micro transactions (after $40, any further premium currency was free)
It seems a console maker can sometimes survive one generation of significant success without going too crazy, but I'm not sure there's ever been one that has survived two without getting bitten by their own arrogance. We'll see if Nintendo's humility survives the Switch.