6. Summary and conclusions
This study has investigated whether crowdfunding presents genuinely new ideas and behaviours, or simply a migration of established practices into a new domain. The findings suggest the former and highlight several resulting theoretical challenges and opportunities. First, we identify two high-level concepts more-or-less unique to crowdfunding, i.e., paying to participate and the erosion of organisations' financial boundaries. The definition of these variables allows crowdfunding to be more carefully positioned and differentiated within its umbrella domain of peer production and crowdsourcing. For example, numerous studies of crowdsourcing have tried to make sense of participants' motivations where material incentivises are inadequate (e.g., Boudreau, Lacetera, & Lakhani, 2011; Zheng, Li, & Hou, 2011; Cahalane, Feller, Finnegan, Hayes, & O'Reilly, 2014) or even non-existent (e.g., Hars & Ou, 2001; Hertel, Niedner, & Herrmann, 2003; Shah, 2006). Crowdfunding challenges these explanations to go further, as it creates circumstances where crowd members are not only volunteering time and effort (which may have otherwise been spent at leisure), they are assuming a tangible financial sacrifice to incentivise ‘sourcers’ to bring their projects or businesses into some shared space. Similarly, many scholars have sought to understand how organisations maintain their identity in light of decreasing knowledge and resource autonomy (e.g., Hippel & Von Krogh, 2003; Chesbrough, 2006; Afuah & Tucci, 2012). Crowdfunding potentially creates a type of customer/investor hybrid that further challenges traditional conceptual models of what it means to be an ‘organization’, not to mention concepts such as ‘upstream’ and ‘downstream’. Second, as part of the metatriangulation we present a view of different categories of crowdfunding that positions them along two discriminatory theoretical dimensions (whether returns are definitive or uncertain and dynamic, and whether returns are fi- nancial or material/social). These may serve to clarify and inform the theoretical comparison of observations made in different types of crowdfunding systems, and so create a more cohesive and integrated field of study. This means that observations of crowd lending, for example, may be considered in terms of their implications for crowdfunding as a whole, rather than restricting discussion to solely the lending category. Such combined views are important if a cumulative body of work is to be maintained capable of keeping up with rapidly changing phenomena (DeLone & McLean, 1992; Benbasat & Zmud, 2003).