Really, I’m not sure why full frame should be considered the standard. Yes, it’s closest to the old 35mm film, but at this point that’s a pretty antiquated baseline. With smartphones, no one really even thinks about the “35mm equivalent“ of those tiny, fixed-aperture lenses, and smartphones are likely how most anyone today is getting their start into the world of photography. I’m old enough to remember film, but I never had a 35mm camera. My parents had one, but it was so fiddly that photography never even interested me. So, if larger sensors are the most important component of ILC photography, than why not say that MF is the future? It seems multiple sensor sizes have long been how photography is done, where cost and size are major considerations. It sounds like M43 is gaining adoption in China, with 2-3 national companies making cameras. I think China has enough customer base to keep the format alive, though who knows if that will export.
Since I also frequent a M43 forum, these discussions have been running for some time. The whole topic reminds me a bit of TVs, where there is a push to move the standards forward, like to 4K and now 8K, 60Hz to 120Hz. For most households, 8K is useless due to size/viewing distances, and 4K is even more than what most people need (it was HDR that made 4K look so much better). The jump from 480P to 720/1080P was clearly noticeable, but the returns are diminishing quickly. With modern cameras, we’ve long since made the jump into sufficiency, to the point that in double-blind comparisons, you’d be hard-pressed to pick out the sensor format most of the time when the photographer is the same. Once you’re at the point of pixel-peeping, you’re really at the fringes of the technology.
In other news, I actually just picked up a used E-M5 mk III, in like-new condition for a great deal. When paired with a 25mm 1.7 prime, it weighs 1.2lbs. THAT is what M43 is all about. It’s almost like everyone wants to see us land on one sensor size. A better ambition, IMO, would be to hope for a shared lens mount for a given sensor size.