In terms of high end AAA stuff like the next numbered Final Fantasy or RE3 Remake, sure. But with Switch set to completely dominate Japan for the foreseeable future, there's no sense in ignoring a base that strong entirely.

Has any big Japanese game made it to switch yet? western support seems to be much better. 

Medium-calibre stuff is more what I had in mind, stuff like Octopath Traveler, Yokai Watch 4, and Shin Megami Tensei V, but Dragon Quest 11 is on the way.

Yea, hopefully things improve, and switch gets some big games.

Question: What do you consider big Japanese games?

I was referring to future support.

I read him, and he is trying to deny that the biggest reason for Switch success in Japan is portability. Considering Switch isn't selling significantly above PS4 in any other territory, but in Japan it sells at over twice the rate and that Japan from all markets is the one where portability is more relevant (magnified by just looking at PSVita that bombed everywhere but done much better in Japan) it is pretty clear that it is the major aspect to differentiate both in sales there.

And that he didn't buy or had the need for PS4 or X1, had a WiiU and bought Switch.

The need to fight that it isn't Portability the major selling point of Switch in Japan, but it is the games (as if the other consoles didn't had good games) or other subject aspects he didn't present.

With the switch success, I am wondering how square will respond with dragon quest 12. Making the game ps5 exclusive wouldn’t be a good idea, but would they go through the trouble of remaking a whole game again for the switch release?

I guess it's the same "big game" idea that happens in most gamers mind: AAA, ancient franchise, current-gen graphics, open world-ish, holywood-sized budget, million(s) seller, sort of everybody likes/buy, etc.

The problem Nintendo has is that it is competing against the ps4,Xbox,and pc, when a major developer makes a game like resi 2 it can be easily brought to those platforms, so the chances of success are much higher ,if the developer makes the game specially for switch and then port it to other platforms it will look like a game from the last generation so most likely it will get ignored or the developer would have to sell it for a smaller price, look for example at octopath traveler I don’t think anyone would be willing to pay 60 dollars for it on steam.
I think this problem will get worse once the ps5 and xboxtwo come out, Nintendo games will always be great and playing old ports on the go is nice but I really don’t see any future third party wise for the switch at least for new games