To be fair to Grisak, Musk's "firing" of a customer was also a B2C situation. That being said, there are a number of factors that differ:

- Musk had not already sold the individual a car.

- Musk was (possibly) responding not to the critical blog post, but to the content of the phone conversation.

- It has not been decided yet, but I doubt Garadget will ultimately have the popularity and cachet of Tesla's cars. This, for better or worse, does have an impact on what you can get away with.

- All of the above notwithstanding, maybe this was not Elon Musk's finest moment. Not ever word out of his mouth is useful for all purposes. Citing the fact he said something, even if he was in a situation that is perfectly analogous to one's own, does not justify one's comparable action.