If your Mac is an M1 or M2 device this might help:
I have a MacBook Air M2 with up to date macOS 13. I can access my camera via EOS Utility. When I first got the computer I used Time Machine to transfer the info from my previous MacBook Air. At the time both machines were on macOS 12. That may be relevant.
I see that the release notes for EOSU 3.16.11 say that the camera cannot be accessed via USB with Ventura.
Thanks for your reply. I transferred the data from on my new Macbook Pro using time machine too, but it was directly system 13.3. The problem is that I am taking most of my photographs in my cellar by remote shooting and Wifi does not go through the walls. So I am stuck until Canon resolves this. The display from my old Macbook Pro died last month, so I am short of options...
09/26/2023: New firmware updates are available.
08/18/2023: Canon EOS R5 C training series is released.
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
03/30/2023: New firmware updates are available.