The problem with that is market value is decided by some arcane process that sane people can’t comprehend, by which I mean it goes up not if the company grows or makes new/better things but if people with a vested interest believe they can sell it later for a return, similary a materially successful business can go down in flames because a hedgefund decided to bet against it and then make it pay for its own buyout forcing a bankruptcy.
If you’re confident that a given company is overvalued by existing investors, you can sell it short, make money off that assessment.
That being said, if you’re wrong, you can lose money doing the same.
The problem with that is market value is decided by some arcane process that sane people can’t comprehend, by which I mean it goes up not if the company grows or makes new/better things but if people with a vested interest believe they can sell it later for a return, similary a materially successful business can go down in flames because a hedgefund decided to bet against it and then make it pay for its own buyout forcing a bankruptcy.