Are they then going to make recommendations about which Ethernet switch these all connect to centrally? 10-Gig / Gig / Fast / Eth? all full wire switching speed? etc, etc
At the moment, you're using the cable in place of ML/PL, so while they're using Ethernet-standard cables, it's not using Ethernet. You'll run them all to a patch panel and patch them together - no switching.
What happens in locations that still use / need RF signals? is that another RF to Ethernet adaptor?
RF balun's exist, might not work over the same length as normal 75 Ohm Coax.