An innovation ecosystem is a multi-stakeholder environment, where different stakeholders interact to solve complex socio-technical challenges. We explored how stakeholders use digital tools, human resources, and their combination to gather information and make decisions in innovation ecosystems. To comprehensively understand stakeholders' motivations, information needs and practices, we conducted a three-part interview study across five stakeholder groups (N=13) using an interactive digital dashboard. We found that stakeholders were primarily motivated to participate in innovation ecosystems by the potential social impact of their contributions. We also found that stakeholders used digital tools to seek "high-level" information to scaffold initial decision-making efforts but ultimately relied on contextual information provided by human networks to enact final decisions. Therefore, people, not digital tools, appear to be the key source of information in these ecosystems. Guided by our findings, we explored how technology might nevertheless enhance stakeholders' decision-making efforts and enable robust and equitable innovation ecosystems.