Let me generalize: Typical "bad" or rather high-risk idea is when someone is coming up with "solution looking for a problem". It typically starts with: "Oh, I

Let me generalize: Typical "bad" or rather high-risk idea is when someone is coming up with "solution looking for a problem". It typically starts with: "Oh, I have this amazing idea about the great business... ". Countless millions lost this way. On the opposite spectrum - typical high success rate idea is born via tight relationships where you already have customer with money ready to buy specific thing where you form startup to build it. And then you retain ownership to rinse-repeat-resell.