Well, at least one thing should come out of all of this. If the world is wealthy enough to switch over to EV, then all of our stocks should do well, not just Tesla. Holding the index funds should be a winner if Tesla is cheap right now at half a trillion plus because it means there is a lot more consumer spending ahead of us in the coming decade.
Tesla's profits and stock performance will be tied to the natural shift from an older, less competitive technology (ICE) to a new and better tech (EV). It has nothing to do with some increase in world wealth any more than the shift from tube TVs to large flat screens relied on a "world wealthy enough" to make the transition.
New EVs are on the verge of cost parity with ICE vehicles. Some are already there. Musk is predicting that battery costs, which continue a steady decline, will actually make EVs cheaper than comparable ICE cars.
There is a reason why VW, Volvo, Ford, Etc, are suddenly all onboard for cranking out new EVs. Unfortunately for them, Tesla is years ahead of them in terms of battery and software tech. The point when nearly every new car/truck buyer can purchase an EV for less than a comparable ICE will occur over the next few years. The automotive losers in this massive market shift will be the legacy auto makers who dragged their feet (not Tesla).
If this is not enough of a clue to invest in TSLA now (on a dip), think about the coming autonomous vehicle market and who the leaders are for that coming reality. Again, Tesla is near or at the top of that list with billions of miles of real life driving data to create a safer system. Every Tesla that is being driven, generates new data to improve the algorithms and mapping. TSLA is relatively cheap, right now and the market for EVs is huge.