There are giant subsidies/grants in Europe for building a EV charger. They are pretty significant:
EV & EV charger incentives vary greatly across Western Europe. Read the full country-by-country overview of EU incentives here.
blog.wallbox.com
I don't see existing chargers being "retrofitted" due to cost and since they are already slammed (Tesla Superchargers are very busy these days) - there is no reason to open those up to CCS EVs. The margins on electricity are so small it doesn't make sense to invest hundreds of millions retrofitting existing chargers unless the goal is to kill off EA completely (EA will die anyhow - it's a compliance network and will run out of funds).
New superchargers.. I can see. But IMO they won't do it until they receive subsidies.