That is certainly possible. However, the trick here is hidden in your saying the idea is "fully fleshed." Our temptation often is to fully flesh ideas either in our own imagination, with our friends, or with internet research. If instead you actually flesh out ideas by speaking to customers, building prototypes and testing them, gathering real user data, and even actual sales data, then definitely yes that idea could be worth a ton. But if this idea is fully fleshed out like in a research paper where you've spent 24 hours in a library, then your case is much harder to make.