It is supported by many major institutions many of which fund scholarly projects, which leads me to think that the emphasis on creating a sustainable long-term database could be for monetary reasons.
I think this assumption is weak in hindsight. There is no evidence in my analysis that Enslaved.org struggles with community accessibility, or that any potential accessibility issues are caused by its institutional funding. While the project's funding is relevant to questions of institutional authority, I used this information to suggest a causal relationship that I did not establish with evidence.