I think they opened up the Supercharger network to ensure that the US didn't establish CCS as the standard and overtake Superchargers, such that Teslas have a competitive dis -advantage, but I don't think they're particularly thrilled to have all these other companies using their chargers.
People seem to think they're raking it in with the Superchargers, but distributing electricity is a low margin business. Same with gas stations where the money mostly comes from the convenience store part of it and such.