JakeJY wrote

ersonally, I'm just glad both are still selling M43 cameras and lenses despite many years of
naysayers saying the format will die in a short while.
It should be obvious to everyone: once established mount systems like m43, never "die in a short while". Invariably, they slowly and gradually fade away.
I guess it depends on how you define it.
Samsung NX died fairly quickly, was on market 2010, died in 2016. (6 years)
Nikon 1 started 2011/2012, died in mid-2018. (6 years)
Pentax Q started in 2011 died in 2017 (6 years)
So there's a graveyard of mirrorless formats that died in roughly 6 years, and naysayers have been saying for a while that M43 would be no exception.
Micro four thirds was released in 2008, I remember in around 2016 (around the time when I was shopping for a camera and ended up with my GX85) people were wondering if M43 is dead already or circling the drain.
It's been 9 years since then and many M43 cameras have come out since then that are far more capable than what was available back then (while not focusing on the smaller cameras, instead the opposite).
The thing is, in 2016, M43 had two competitors in the mirrorless realm; Sony's F mount APSC and their first gen FE FF's, and Canon's M mounts. Both of the lens offerings for the APSC bodies in these mounts were....anemic. And the FF A7 bodies were sparse on the lenses, yet, and kind of beta level efforts. So, M43 had a great niche to fit in, with the excellent lens selection and their recently developed 20MP bodies.
Fast forward to today, though, and the entire market has shifted. Canon, Nikon, and Sony, all now have much more advanced options in their mirrorless lines, including well priced and well accessorized APSC models, and a path for common mounts within their systems for APSC users to interchange with FF if they want in the future. And, third party lens developers are deep in the mix, too.
OM has some unique offerings, along with the name recognition, that give it a chance to stay in the game in M43. And, they have been releasing interesting cameras with capabilities that are competitive, and lenses that are really unique. So, they are carving out a niche that may be able to stick around.
Panasonic, however, has stepped back, and offered "refreshes" of most of its cameras, and kited the body of the G9II from their FF line. They have not done what they have needed to in terms of AF of their more basic models, and, while the 20MP sensor in the models below the G9II is very competent, it's showing its age, certainly by comparison to the APSC competition out there.
The only area that Panasonic has been genuinely busy in in the M43 realm is with their GH cameras. But for photography? They are not staying competitive. They have introduced 8 FF models since 2020, and only two new non-GH M43 models (the G100 and the G9II) in the same time frame. And that's why the gloom and doom is hovering around here about this now.
So, stiff competition from the big 3, Panasonic putting its development eggs into L-mount, and market obsession with FF, are genuinely worrisome for the format's long term health, now, vs 9 years ago.
-J