I fail to see what's scalable about an idea without implementation, making the end result, a non-scalable business model (as a business that doesn't have an implementation by definition isn't scaling), the same.
My point is that if you're a business guy who just has an idea, and doesn't have any business creating/building experience, you're going to have a hard time getting technical people on-board. You can get business creating experience without having some Super Duper Awesome Unique Idea that requires a technical guy. And you can do this yourself and earn some tech chops at the same time, which will help at selling your "It's the Vimeo of Youtubes!" idea to other, more technical people.
A successful consulting business is more valuable than having an idea that hasn't been implemented. Having had an unsuccessful consulting business is also more valuable than solely having an idea that hasn't been implemented.
The problem here may be pride: being a person with an idea is seen as a more desirable state to be in than executing on someone else's idea.