Even if form factor looks similar, all those new cameras are not direct competitors for BMMCC.
Z-CAMs produce lower image quality, and less dynamic range than BMMCC.
Z-CAMs RAW workflow is not quick and easy.
Even lowest Z-CAM model price is higher than BMMCC (or near same as fully rigged BMMCC with OLPF filter)
Z-CAMs record only to expensive CFAST 2.0. BMMCC use rather cheap SD cards.
KOMODO is 7 times more expensive than new BMMCC or 14 times more than second hand BMMCC.
KOMODO "improved" 22s boot up time

BMMCC boot time 2-3 seconds.
KOMODO work 1.5 hours on 50W/h battery. BMMCC work about 6 hours from same power.
No HDMI connector, require only SDI monitor.
MAVO Edge 8K in $12000 and exists only as 3D render yet
No HDMI connector, require only SDI monitor or proprietary Kinefinity monitor/EVF