"Accommodating both standards
"Accommodating both standards is more expensive for EVSE providers"
Not if you can plug a present EVSE J1772 plug into a combo socket on a car at your house. YOU CAN DO THAT RIGHT? DON'T TELL ME THAT YOU CAN'T.
If we have to change everyone's home EVSE, my opinion just went from "Dang, SAE combo is a pain in the ass for everyone." to "I hope the SAE combo standard dies a quick and incredibly painful death and then burns in hell just to be sure it doesn't inflict any more stupid pain on society."