Unless you cap the allowed funding from large business to be some fraction of the combined funding from small business, all you're doing as a group purporting t

Unless you cap the allowed funding from large business to be some fraction of the combined funding from small business, all you're doing as a group purporting to support small business is signing up to either become a talking head for large business or a painful reckoning later when they find a substantial portion of their projecting funding disappeared, possibly leaving them insolvent based on current cash outflow. Maybe, if they're extremely lucky and prescient, they can quickly leverage that money into increased exposure and other funding sources so they can reduce what they take from big business, whether relatively or in total. It's just like a small business signing one account that is worth multiple of all the other accounts put together. Either you use that money to diversify as soon as you can or you're just a subsidiary in all but name.