Not really. The rule is: if government is subsidizing the chargers, it must be available to all cars. Which is more than fair. The current Tesla supercharger

Not really. The rule is: if government is subsidizing the chargers, it must be available to all cars. Which is more than fair. The current Tesla superchargers were fully funded by Tesla, so that requirement doesn't apply. If government gives Tesla money to build a supercharger then this (and ONLY this) supercharger needs to be available to every car. Which Tesla would do by adding CCS connector to those superchargers and provide an app where you, an owner of Ford or GM car, can create an account and charge using that CCS connector. That doesn't require Tesla to open the design of the connector. What GM and Ford is (probably) paying here is access to 12 thousand of superchargers that Tesla build and paid for and things like API access etc. so that they can implement seamless billing for charging in their apps (as Tesla does in Tesla app) or get real-time information about availability of chargers so that they can do route planning that takes into account location of superchargers.