Pentax is a dead brand. Fujifilm is irrelevant and can only attract irrational cultists to buy their shit cameras. Olympus is irrelevant and gimmicky. Panasonic has a very specific niche with youtubers who aren't rich enough for a real cine camera but want to feel like they are hot shit. Hasslebland is bland garbage. Leica is not a serious camera brand.

If you look at market share and you look at reasons for the market share, it comes down to mostly Sony, Canon and Nikon. And all of these brands are pushing full frame mirrorless. This is the future of cameras. So why the hell do you own a Fujifilm?