That... that is what I said....I think I need more sleep. Completely skipped the middle of your post.
A good commercial? Doable.The problem imo is that cgi and live action commercials are already really common.
A great commercial? Impossible. (or pretty close?)
They show the player physically inside the game yet everyone knows this isn't how the game actually plays. A VR commercial needs to stress that it's not marketing tricks but an accurate representation of the experience.