Intrinsic valuations do not require giving away work for free, though in practice it's uncommon to have access to information required to do this. For example,

Intrinsic valuations do not require giving away work for free, though in practice it's uncommon to have access to information required to do this. For example, say a developer worked on an open source project and was paid market rate for their work. At the very least, the code they've contributed is public.