IONITY is a JV between VW, Mercedes, Ford, BMW and now Hyundai. VW also owns Electrify America. Hyundai, NIO in Asia. BYD even manufactures their own chargers. So I wouldn’t say its that rare.
The Sion is a contract manufactured budget vehicle all about simplicity in general, which means they will have to make a profit from trimming down development costs+capex and maximising volume. I don’t expect an expensive refresh every 4 years for example. I don’t doubt that its possible for them to break even, just that it will be difficult.