It is a voluntary organization huffel. So no it won't put anyone out of business. The only people with the power to put a supplier out of business are the state local and federal authorities, and of course the suppliers themselves by not catering to their client base.
This is a very good idea in principle. My concern is, regardless of the "voluntary" nature of the organization, once it gets established, won't there be a stigma attached to any juice maker who is NOT a member, even if the reason is simply economic? Just because a lab is small, and may not be able to afford the monthly membership fees, does not mean that their products are, ipso facto, unsafe. But, if they aren't a member, won't they get tarred with that brush?