I agree with you 75% of the way but why on earth do you think Z-mount will win? Canon has a huge customer base who like their ergonomics and product line and feel comfortable with them who will likely follow them into mirrorless over time. They have also clearly shown that they can make cutting edge mirrorless lenses. Sony has mirrorless tech they've iterated on over several years to the point they have a very well polished product which does everything very well, along with steadily growing 3rd party lens support and the greatest name in optics - Zeiss. Nikon has two cameras which share the Sony sensors, but with a separate completely immature lens mount. Where's the benefit? Nikon shooters may as well just go with Sony at this point. Canon at least came up with interesting value-add adaptors.>>3403178
I can't wait for sigma to create the most sublime full frame stills-focused camera ever made, with a lens mount so ubiquitous in a few years everything will be adaptable to it. My dream of Contax G 45mm f/2 on a mirrorless Sigma FF is coming closer and closer to reality.