Author's accepted version (postprint).This is an Accepted Manuscript of an article published by Emerald in International Journal of Entrepreneurial Behaviour & Research on 31/12/2021.Available online: https://www.emerald.com/insight/content/doi/10.1108/IJEBR-02-2021-0144/full/pdf?title=social-entrepreneurship-organisations-and-collaboration-taking-stock-and-looking-forward