That is true, but only because a) the market for entire companies is fairly small, and b) Tesla, overall, is vastly overvalued.
If you look at other companies like Dell, or the various acquisitions of Berkshire Hathaway, you would find plenty of examples of people deciding the market price of companies was less than the value, doing exactly what you are arguing can't happen, and making money from it.
If you look at other companies like Dell, or the various acquisitions of Berkshire Hathaway, you would find plenty of examples of people deciding the market price of companies was less than the value, doing exactly what you are arguing can't happen, and making money from it.