I wouldn't make the game for the WiiU, I would make it for 3DS, where the RPG fanbase is (unlike say, Sony's PS4). Hell the DQ fanbase IS on 3DS and outside of DQ4r, DQ5r, DQ7 and DQ8, every other DQ game (mainline or spinoff, save for that musou game) was on a Nintendo system. It's also interesting to note that every single mainline DQ game has been released (or will be) on a Nintendo system.
But anyway, the DQ fanbase goes where the games go. But to believe even for a split second that a PS4 release makes sense when DQ is irrelevant outside of Japan (save for DQ9 thanks to... Nintendo) is beyond delusional, especially with the state of console gaming in Japan.
I'm still a believer of a misstranslation and that the game wasn't designed around "a controler" (thus implying a home console version) but around "control buttons".
Releasing FFXV, KH3 or even some b-tier games like SO5 and ToZ or C-tier games like Nier 2 on PS4 makes sense since their worldwide fanbase exists on Sony's systems (except maybe for Nier 2, which is a big unkown) but DQ11? Yeah I don't buy it working outside of Japan with the way SE has misshandled the franchise.
So if Square Enix, the owners of the IP, feel that the PS4/PS3 is the best business decision for their plans for the franchise, are they also delusional? As I say, you don't know what their intentions for the IP's future are. Growth in the west? Helping to inject a bit of life into the Japanese console market? Who knows, but clearly Square Enix have a plan for DQ and Playstation, and I'd say it's probably more informed than a bunch of arm chair analysts on GAF looking at nothing but Media Create numbers to determine what's best for a multi million dollar publisher to do with their multi million dollar franchise.
I completely see the reason why Dragon Quest on 3DS makes the most sense, purely from a sales perspective. But these aren't the only things that inform what platforms games are put on. So if you'd refrain from the thinly veiled insult, that'd be grand.
Also, as a Japanese speaker, I find it incredibly hard to believe that when translating the script, the translator got controller and controller buttons confused. They sound pretty different, but hey, human error is a fascinating thing.
I don't mind what it comes out on, I mean I imported a Japanese 3DS specifically to play DQVII, but I'm not really a fan of the idea that Dragon Quest XI being on anything but 3DS makes no sense. It's completely irrational, because the implication is that it would bomb on other systems. If it was PC or XB1 exclusive then yeah, it probably would. But PS4/PS3 and potentially Vita? It'll be fine.