They'd still be facing the same dealer and local legislative roadblocks that Tesla has been triggering states to create or enforce since they started and they can't just bully through that. It will require lobbying, time and possibly new legislation, none of which is fast.
Having Tesla front-run a lot of this stuff is pretty smart if they are intending to go that route though.
Imagine the Apple talking point. "We want to sell you this car but government protectionist regulation won't allow us". And they do that in every state, starting with the most wealthy, most liberal states and move slowly to the less affluent states. Apple has a lot more die-hard fans than Tesla. Just compare the number of people who have Apple products compared to Teslas. y
Having Tesla front-run a lot of this stuff is pretty smart if they are intending to go that route though.