Private information should be very hard to come by, it is not something that can be learned in a few minutes from an internet search.
That Tesla is far ahead in EV technology than other car producers it is not private information, so it won't give you any advantage in trading its stock. There are many other aspects to building a successful car company than just the technological aspects, and Tesla could still very well fail there. It seems also that you implying that January 2020 rise in Tesla price is due to the market suddenly realizing the Tesla lead, but there could many alternative explanations. In fact, it is a highly shorted stock, so for sure your position is debated by many smart people.
Venture capitalists do have access to private information, from financials to getting to known the founders, to internal metrics/datasets on what makes a company successful.
I agree that to be a successful entrepreneur you need to tap private information/build edges. To me it doesn't look trivial/nor easy at all: there are orders of magnitude more intelligence people than rich intelligence people.
It is not very rational to have 40% of one's net worth in a single investment. You should use the https://en.wikipedia.org/wiki/Kelly_criterion to size your bets.