Buy the genius and not the company
Every day, the phrase "stocks are too expensive" or "they are going to fall because they are too expensive" is repeated and repeated. First, stocks have the price that the market sets for them and implicitly have a risk. Second, stocks do not fall because they are too expensive... they fall because the market no longer wants that risk and they move to another asset. That's how supply and demand works...it's very simple.
The market reflects so many things that are not summarized in the cost or the economics of an asset... in the fundamental arguments or in the financial indicators. Today the market rewards prices and if the data comes out "less bad", compared to what specialists estimate, it becomes the big news. Investments become trends that lead to erratic behavior, as observed in the last twelve months...but that is the market.
The best time to enter the market is the time of the investor. However, it is necessary to enter well advised. You can also be an outstanding investor, a risk manager, even when prices fall.
Apple was a phenomenon and still is. Perhaps it was the first in the last 10 years to dare to innovate and offer that future. Google, Amazon and other facilities have also done so.
And when you look at a professional, entrepreneurial, patient investor, who believed his own movie, who is a physicist and looks like a scientist, restless, extravagant, who sends manned rockets into space and places satellites all the time, there is no reason to be surprised by the result of his company's actions. Everything has a limit and investors should understand that, but Elon Musk's mind does not.