Yes week 40 was the last stable week at about 40k and then sales dropped, so the  84k + 60k average will steadily make up for it. But I feel sony would have had a holiday boost anyway. Basically the 84k only makes up for 1 week while I think if they kept stock they could have sold 40k per week. A net increase of about 120k sales by this point. So the 60k per week won't pay off for some time.

Not surprising given the unavailability of the PS5.

Definitely won't see an increase next week.

I'm pretty sure this gen will be longer too.  In fact, I think it properly began this year.  We actually have several Gen 9 exclusive games this year like Spider-Man 2, Alan Wake 2, FF16, BG 3, Starfield, etc....  But in 2020-2022, the only new Gen 9 exclusive content was Ratchet and Clank and maybe some other smaller stuff.  If you count 2023 as year 1 then a 2028-2029 launch for new hardware would give a 6-7 year development cycle which is how long generations have lasted previously.

Kind of a special week when your previous console manages to outsell your current one even 3 years after it's official release.

Will be interesting to see how pent up the demand for the new model is, although I'm expecting the digital model and pricier to be shunned by most customers there.

So you don't think Nintendo antecipated their launch of Switch due to WiiU blunder or that MS and Sony would have delayed the release of PS4/PS5 X1/Series if the sales of the SW of the previous system was still as strong as in the peak?

Not sure your point of being leapfrogged makes much sense actually, X360 their most successful console owns a good portion of it to a 1 year earlier release (which also most likely rushed PS3 release), and X1 being weaker than PS4 wasn't the issue (as we can see that Series S outsell X and PS5 is weaker than X on paper but comfortably outsell it).

Companies do have timelines and expected plan, but they most certainly change based on sales of HW/SW, and not because of a one week sales but they certainly keep monitoring their quarterly results and will change plans if they get to out of forecast.

If companies released their next systems when sales declined, Switch would have launched in 2013, Xbox Series in like 2017, Wii U in 2010, etc.

The 360 got lucky with Sony bungling the PS3, they can't rely on such luck again. Xbone being weaker than PS4 was absolutely one of the reasons it was beaten. PS5 and Series isn't the same as PS5 and X are almost a tie in power and the S despite being $200 cheaper hasn't stopped Series sales from crashing.

And theoretically, if next gen does come in 2027, so what? That still leaves us likely another 5 years of Xbox Series being produced, that's still enough for them to ship another 500k to Japan.