I'll bring up a suggestion that has gotten a cold response here in the past. I feel this suggestion would make this whole plan kind of obsolete and help to consolidate to one charging standard.....drumroll.....
Supercharger to CCS and/or Chademo adapter.
Tesla could charge a huge premium, make a lot of money, promote EV adoption, expand the SC network. Seems like everybody wins.
Two concepts would aid Tesla owners, and increase Tesla's profitability:
1) A CCS adapter that allows Teslas to charge at CCS stations. Tesla makes a small profit on the adapter, but it expands Tesla driver's charging location options, which would accelerate expansion of CCS locations, and reduce loading of urban Superchargers, since CCS sites are clustered in urban areas. The income is derived from slower required expansion of urban SC capabilities, and lower electric costs as well as sale of the adapter itself.
2) A "leased" Supercharger adapter that permits CHAdeMO and CCS cars to charge at Superchargers. To avoid congestion, aim the pricing accordingly, and use only a single SC fixture that will allow the adapter. Teslas will still charge for free at the "All EV's" station, but other brands would pay. It would show owners of lessor brands the advantages of Superchargers while monetizing the sites at the same time. "All EV's Welcome" would be at one end, and "Reserved For Tesla EV's" at the other stalls.
The more use remote charging sites get, the more will be built. The more congested CCS sites will up the kW's to derive the most income.
Plan 2 would require some capital, but perhaps not a lot. Something as simple as a Bluetooth chip in a single stall and a Bluetooth chip in the adapter would be all that is required. If the stall does not chat with the adapter, no charging will happen.
To keep costs low, the chip in the adapter will also talk with a cellphone. You use a webphone app to purchase more time, which is sent via bluetooth to the adapter, so it can be refreshed anywhere, anytime, with no human intervention or remote networking equipment for the Superchargers.