The skills that gets you into business (programming for example) are not the ones that will make you successful at business (everything else).
So perhaps the question shouldn't be about what does a non-programmer bring to a small team, but rather what do you as current co-founders not personally bring to your own business?
If building a scalable money making app/service/product/thing is what you want to do, then customer development is going to be just as important as product development, and connecting the dots between customers/users and your idea/features cannot be written with code alone.
Either the existing co-founders will need to share an equal level of interest/skill/time for the other parts of the equation (design/ux/sales/marketing/support/bizdev/funding/everything else), or you will need to acquire these skills via payroll or equity.
Knowing in which areas you suck will help this process a lot, and this only comes with giving something a go yourself.
Once you know your weaknesses you will be in a good position to assess what skills/experience a new co-founder will need to have to balance things out.
So perhaps the question shouldn't be about what does a non-programmer bring to a small team, but rather what do you as current co-founders not personally bring to your own business?
If building a scalable money making app/service/product/thing is what you want to do, then customer development is going to be just as important as product development, and connecting the dots between customers/users and your idea/features cannot be written with code alone.
Either the existing co-founders will need to share an equal level of interest/skill/time for the other parts of the equation (design/ux/sales/marketing/support/bizdev/funding/everything else), or you will need to acquire these skills via payroll or equity.
Knowing in which areas you suck will help this process a lot, and this only comes with giving something a go yourself.
Once you know your weaknesses you will be in a good position to assess what skills/experience a new co-founder will need to have to balance things out.