its only productive value is in providing an out to the original investor
That's the whole point, though. If there was no secondary market for capital it would be extremely difficult for any company or venture to raise primary capital. It's got nothing to do with derivatives.
I think on most people’s definition of “investing” it is investing, though. And that kind of makes sense - from the ‘investor’s’ perspective, why should my activity have a different name if they buy the shares from one person as opposed to another? They’re still doing the same thing
Yeah, agree with andy above. In the US they have the Howey Test, which is as good a definition as any: "investment of money in a common enterprise with a reasonable expectation of profits to be derived from the efforts of others."
That's the whole point, though. If there was no secondary market for capital it would be extremely difficult for any company or venture to raise primary capital. It's got nothing to do with derivatives.