Tesla is good at high-end, low volume products. But the Model 3 production fiasco shows they don't know how to do what Detroit and Wolfsburg and Toyota City do. This is in a way a step backwards. Tesla is going back to targeting the 1%.
There are lots of little supercar companies. It's not that hard to build an electric supercar in tiny volume. I know some people who've done it. It's fun, and there are idiots with too much money who'll buy the thing. But it's a waste of engineering talent which should be getting the volume product out the door.