I doubt more than 0.1% of the population understands the importance of almost everything Tesla does.
It has been tough for decades to understand anything about any kind of battery. Most people have definite beliefs about the 'rights' and 'wrongs' about them. In almost all cases, these beliefs are myths generated by other people who want to sound expert, but aren't. Even the most educated battery specialists know batteries as extremely complex systems with equally complex behaviours, and cannot give simple answers.
Now that batteries are getting the attention they deserve, they are improving very fast.
So when Tesla aims to produce its own batteries, most people equate it in importance to, say, selling insurance. They can't imagine this could be the prospect of controlling energy storage markets for decades to come. Besides 'car company', ...no, 'tech company', ...no, 'software company'... Tesla has always been a battery company, even though they haven't had the resources or expertise to produce them independently, until now.
Whoever does understand often doesn't have a lot of money, and would never be able to convince anyone else to invest theirs.
Tesla is approaching an exponential development in a non-tech field. It will probably go through a massive bubble when things like battery tech and foreign production capacities start to materialize out of left field.