It’s not so much DRM as authentication, seamless zero-user-interaction payment, safety, and charging protocols.

You’d also need a Tesla account with a credit card on file, and the ability for your vehicle to identify itself as the vehicle associated with that account.

Or… Tesla might just make it happen, in the future.

I feel like they will.

Eventually, the market for EV will be so large that they may as well try and get everyone they can on the chargers, the same way that iTunes on Windows was primarily to grab a huge chunk of the digital music market.