Amazon reminds me of a guy who started out a lawn mower service in Alaska and while searching for profitability, ended up being a hairdresser. The original idea of selling books online was a financial failure (they never did it with a profit) but eventually they have found their niche, could services. Funny thing is, they could have just bought a shitload of computers/servers and leave out the building of distribution centers.
Tesla is really in the stock selling business. There is nothing special proprietary about them that you won't see in other EVs today or in a few years. Their hugely costly fast charger network could have been a killer IF other automaker embrace the same standard, but in Europe they just came up with their own. The swallowing up of SolarCity had nothing to do with batteries, it was a "saving my cousin's ass" kind of move.
Now if SpaceX actually keeps making money, what if they merge with Tesla and Tesla ends up in the space business? Forget about EVs, they are only good to be shot into space anyway...
But the point of the video is, as long as they don't run out of cash and they still can raise money, the dream will live on.