The global crisis of the last few years has triggered a resurgence of public interest in newer and entrepreneurial firms because of their impact on employment and economic growth. These firms are traditionally perceived as more fragile than established ones and, as a result, policy makers have turned increasing attention toward initiatives aimed at supporting them. These various forms of organizational sponsorship try to mediate and facilitate the interactions between startups and their environments. Building on recent developments in the literatures on entrepreneurial munificence and on the allocation of attention, we investigate which gestation activities are linked with successfully completing the pre-seed phase of a venture creation, and which support partners are more effective under difference sets of environmental constraints.