A friend of mine has said that there are three things someone can bring to a startup
- The ability to build a product
- The ability to bring in money (either VC or sales)
- The ability to tolerate risk
As a technical founder who has worked with many non-technical people, I have found it quite rare that a non-technical founder can bring in much on the product side. Almost every non-technical founder I have worked with claims that he is a "product person," but I have found that pretty much none of them are.
Some non-technical founders are good sales people, and can bring in either VC, customers, or both. Some technical founders can do this too, but if you are good enough at this, you will be pulling your weight.
The final thing is the ability to tolerate risk. If you can keep the team motivated and on-target even when things are going badly, that is almost enough in many cases. Very few technical founders can do this well (since most engineers are pretty risk averse), so this is an opportunity to distinguish yourself.
In summary, if you can raise money AND keep everyone else happy and productive, you are pretty much doing your job at the early stage.