[renewiltord]

Well, no company is 'worth' its market cap since you can rarely exchange it for that value in total. But of course the only meaningful notion of absolute 'worth' of something like this is the value as determined by the market. Of course it may not have been worth it to you at the marginal clearing price, but that's because the value to you is a function of the valuer and the thing being valued.

[ponker]

If a guy is selling sandwiches on the street for $1 million and a hungry Jeff Bezos happens to wander by and purchase one, the sandwiches still aren't worth $1 million.

[renewiltord]

Well, that's because 'worth' is ill-defined on its own. The 'worth' of that sandwich could be any of "last clearing price", "current ask", "current bid", or any other metric you choose.

So the sandwich isn't worth a million but it isn't worth any sum because 'worth' isn't a concept on its own.

[ehvatum]

That's right; you'd have to pay Bezos substantially more to get that sandwich.