Knew this was going to happen. Just a bit of consequence of some choices over the years; I'd primarily blame the porting of almost all their current-gen games to PC ahead of the Pro's launch (driving down perceived value of the Pro) and the misaligned GAAS strategy, as the main culprits. But we know that SIE are cleaning things up on both fronts, and that's a positive.
Even so, PS5 Pro sales should pick up again when new major AAA titles drop. Ghosts of Yotei and especially GTA6 should be the ones to do it. But once GTA6 gets its PC port, the boost it has for the PS5 Pro will drop sharply. But it'd also seem, base PS5 sales are still doing extremely well; they had a record Q3 over the holidays, so base PS5s are to some extent covering the drop in PS5 Pro sales launch-aligned.
The more I think about it, the people in Sony that think the Pro console's presence is to improve margins for an accounts spreadsheet by lopping off valued features like optical and upselling clearly have forgotten or weren't at Sony when the lack of a needed Pro (PS2 Pro) nearly cost them the entire company, and if you had a time machine to go back to launch a PS2 Pro you certainly wouldn't be talking about Premium pricing when you knew what the 360 was going to bring to try and eat your lunch two years early.
You'd be selling at cost or a loss just to position yourself against any inbound platform threat to carry your PS2 momentum straight into a comfortable PS3 transition with a cheap Pro model while you were flying high.
TBH I don't think the PS2 needed a Pro. The industry was much different back then and even tho the 360 launched early, the PS2 still sold extremely well that year. In fact, it might've outsold the 360 anyhow in spite of that, like how the PS1 & N64 still outsold the Dreamcast during 2000. The PS3's issues were the PS3's alone and I don't know if PS2 should've been burdened with covering up for PS3's early struggles any more than it already did.
After all, some 50 million PS2s sold AFTER the PS3's launch; a PS2 Pro would've likely made things even worst for the PS3 and eaten away at what sales it managed in the early years. It's interesting to speculate a PS2 Pro with, say, a Blu-Ray drive, could've helped with even lower-end adoption of that format against HD-DVD, and maybe would've given Sony more time to either get the dual-Cell stuff working, or a better GPU, plus get costs for the Blu-Ray drive down.
I'm just curious how long would that have taken, before they could launch a PS3 at, say, $399? Because that's the max price they probably would've been forced into, and I can't see that type of PS3 coming any later than 2007. By then 360 would've been on the market for two years, Wii would've been on the market for a year...a PS2 Pro would've been out for 2 years which might be a questionably short amount of time so are we talking a PS2 Pro in 2004 instead? I don't know if Blu-Ray were even ready by that point, and Sony at that time would've wanted to push it with a console, rather than as an add-on peripheral.
If they had time to revise some things about PS3 and could get it to market for a cheaper $399 by end of 2007, they'd have to launch against Halo 3 & Mass Effect. Still very tough proposition for PS3 in the West (mainly US & UK) considering that. At least Uncharted would've been ready by then, maybe Lair would've been polished some more...but software-wise I don't know if a 2007 PS3 launch would've done too hot against 360's exclusives or the Wii having stuff like Super Mario Galaxy that same year.
Guess one upside to a later PS3 would've been, Sony maybe streamlining SDKs for the system ahead of launch so that Japanese 3P could have an easier transition to 7th gen HD games production. Maybe establish some ICE teams at the time proactively, instead of what they did forming them reactively later in the PS3 gen due to devs complaining about Cell & PS3 development. It would've also meant Sony'd have relied heavily on Japanese support because by late '07 Microsoft would've had most Western 3P on lock focused mainly on 360 for non-casual games. That maybe would've forced Sony to push harder for exclusivity on games like FF XIII, MGS4 (they never had an actual deal for it; Konami & Kojima just decided not to port to 360 because of DVD and MS never reached out to help)...maybe we'd of seen sequels to stuff like Rogue Galaxy, Omega Boost, Legend of Dragoon, Parappa etc.
The knock-on effect of a late PS3 launch tho...it's quite something to think about. Maybe MS could've gotten away with their BS DRM on XBO and Wii U would've performed a bit better because PS4 likely would've launched in 2014 vs 2013. Stuff like that...tho it's also likely the XBO that did launch would've done so in 2012 (or still 2013) but been the weaker prototype instead of the XBO we actually got. That could've been potentially even more disastrous for MS long-term even if they got a 1-2 year head start on PS4.