There seems to be an assumption that idea guy == business guy. Also that idea guy has no knowledge or understanding of anything technical. And that somehow idea

There seems to be an assumption that idea guy == business guy. Also that idea guy has no knowledge or understanding of anything technical. And that somehow idea guy is always trying to scam you. I think ideas are a skill just like anything else. Most people can design a web page. Not everyone can design a good web page. Most people can or can learn to program, but that does't mean they can develop a good site (this one is a bit more of a stretch). As a converse, I know quite a few (very good) developers who have ideas, but those ideas suck. And so do their UIs. And their marketing plan.