[kromodor]

Depends on the idea. If the idea is based on real world data, strong feedback and statistics - then, why not.

Otherwise is a complete zero. I personally have ideas for 10 lifetimes of work and that is just the top which I don't scrape after a brief analysis.

As others said - ideas, in their initial states, rarely worth anything. Experience shapes idea into an unrecognisable state and even the right ideas, without the correct offering, may fail.

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Sometimes an idea can be worth a lot. Image a working company in a bottleneck situation on their concept. They have a problem that blocks their scalability. If you bring up an idea, that will fit their situation and be an elegant solution - they this can be worth a lot. But this requires a tremendous experience in the field.