Competition is basically non-existent. Anyone who wants an electric car, wants a Tesla. The model 3 waiting list is unlike anything ever seen by any other auto manufacturer.

In addition to Tesla's brand prestige, loyal fan-base and unmatched products, no other car company has a giga factory to produce all the necessary batteries, nor do they have an extensive world-wide supercharger network. Tesla is so far ahead of the game here.

Keep in mind too that Elon Musk started Tesla for the sake of accelerating the world to sustainable energy, not for the sake of making money. Tesla is expected to be profitable soon in any case, but it's important to remember the philosophy it's built on.

Your money, your choice, but I see shorting Tesla as a terrible idea, and one that is acting against a company working tirelessly to change the world for the better.