I get your point but as a country it ain't dead. The USA might be the only country atm that sells more ps4 per week then Japan. Its the only country that has a higher LTD. I accept ps4 isn't on fire in Japan but its far from dead. 

Probably not but spiderman is still pushing ps4 sales in October. Couple that with bo4 and rdr2 it could come pretty close. Hard to call actually. October will probably be slightly down. 

Well, I will say something very obvious, and everybody knows already, but for some unknown reasons many tend to forget about.  Japan is a "very special" Market, japanese gamers have their own taste, and it's basicly impossible to sell great for a Console mainly oriented for the west.  Is Microsoft XBox a bad console with no good games? Hell no, there are plenty of great games, and with XBox One X you have the best multiplatform experience.  Do Japan care about ? XBox is dying there and nobody cares about.  And look at the Switch ? It offers the absolute worse multiplatform experience, weak support from 3rd party dev/publishers, the worse graphics and sound experience, and it is selling very good, much better than PS4.  It's the way the Nintendo console is conceived, it is small, cool and also a PORTABLE CONSOLE ! The console itself and Its games appeal to the japanese market.  

Is PS4 dead in Japan ? Obsolutely not. Of course not, I would never use words like this.  I would rather say that the Japan Market is dying, if a good console like XBox One is dying there.  Forza Horizon 4 is a mindblowing game, but look, japanese gamers don't care. They only care about their own taste, their own little world and don't even try to expand it.

 The gaming experience is moving forward, but it appears they don't care. So considering this, PS4 is doing good in Japan.  No boost when great games are released? Does it mean that a cosole is dead there ? It is not the console dead, THEY are "dead", stuck for years to the same things. 

Benji don't have insight in preorders, NPD predicting tool that was quite accurate until now shows that Switch so far is doing quite strong with preorders.

http://gamrconnect.vgchartz.com/post.php?id=8904230

http://gamrconnect.vgchartz.com/thread.php?id=235297&page=97

Really seems all three consoles are still selling fairly well. I'm going to guess that Looking at sales it seems like the PS4 will likely to be the next PS1 at this point. While Switch seems likely to have sales around the SNES.

I see PS4 taking October as well. RDR2, COD & Fifa marketing/ bundles.

49 million lifetime for Switch? Dunno about that one... 

Only ~50 million for Switch? It's at 40% of that in 1.5 years and only 1 holiday season.

Ace Combat 7, KH3 and RE 2 Remake. All in January.

Switch not going well.
20 million seems unreachable.

Me neither. It's selling too fast for that to be the case.