Thats funny, I have lots of ideas that would make great businesses, and the passion to work on them, but I don't know any kick-ass web developers. You just don't meet them in my line of work.
as it happens, this very community is teeming with them. i am myself a woz, but not the type you're looking for. web-dev does not come naturally to me. i prefer writing programs the old-fashioned way.
I'm a web developer and I've ran small online businesses in the past but they were service businesses. I don't have any great ideas for a cool web app, even though I can build one.
That's my reason at least.
Don't even get me started on my iPhone app ideas...