They aren't doing so hot at the moment, and nothing's had worldwide success since Layton (I'm pretty sure YW outdid it domestically, even though it hasn't had much luck finding a foothold internationally) and even that's not been very successful with its latest entries.
It's hard to get raw numbers on anything for them lately, but Snack World was their next Yokai-style multimedia project and it seemed to fizzle out without any fanfare, and Inazuma is still in limbo despite having a game in development for a few years now. I was being a bit hyperbolic - they're not dead, but it's not looking pretty if they can't shape up soon.