I do have a few ideas, but I'll hold off on proposing solutions at first.

The full edict you are alluding to is:

Do not propose solutions until the problem has been discussed as thoroughly as possible without suggesting any.

So, perhaps while you are waiting to propose solutions, you can actively engage in the prelimaries of exploring the problem. And take a step back, and ask is the problem how to start more social businesses, or is the problem how to reliably fund SIAI and the idea of social businesses is a prematurely proposed solution?