i think at this point it is all a little silly....i got the fuji 50s when it came out, after testing it vs the X1D and comparing it to the A7RII....ended up getting rid of it because of the A7RIII, still have a RX1RII for high sync speed and after playing with the A7RIV have for now decided against it mostly because 40mpix really are a sweet spot for commercial photography....even 60mpix are difficult to deal with when considering the actual advantage, the gfx100 makes no sense for me, i understand some people need the extra resolution...
there was a rumor that the A9II would have 16 stops dr, 14 stops at 800, 36mpix.....combined with the size and AF that would pretty much be a perfect camera.....it is not, the A7RIV only adds pixels....
i cant go back to DSLR so the D850 is out, the Z7 is a step behind the A7RIII in every way IMO, i prefer sony glass to nikon, just like i prefer fuji GF glass to hasselblad X (although at this point i would look into the X1DII just because it is the only leaf shutter game in town but then again, i cant put up with phocus)....
i guess all these cameras provide insane files, personal preference should make the difference and everybody looks for something slightly different and likes slightly different things....