Comment by mancerayder

Hold on - your link also says

Fair market value is different from market value and appraised value.

FMV makes a lot of sense in things like insurance payouts and private equity, cuz the assets aren't liquid and have to be assessed. If the thing is already being bought and sold on public markets, like Tesla, FMV is less useful to talk about. Now you enter the realm of financial analysis (like some analyst's report about a publicly traded stock) and even financial audits and such, it's orthogonal.