Imho, The long term goals may be similar to what "normal" companies may have. Cooperatives are just means to an end but generally one may achieve lofty ambitions in any type of organization. The document sums up very nicely the pros and cons of cooperative targeting freelancers. The only thing one has to decide is wether one will reach sustainability in a normal company or in a cooperative - the journeys are two different wild adventures.

In terms of scaling: You may either form a network or join one. I'm part of Europe based digital cooperative and we're starting to do just that https://medium.com/camplight/accelerating-a-global-movement-... :)