To this day I'm not sure if anyone is really sure whether Epstein's "philanthropy" was just another avenue of his sexual abuse (cf the stories about his "scientific" interest in his own genetics), or a "cost" to launder his reputation allowing him to continue it, or if both were tools for an intelligence service's broader aims.

I do think it's clear he didn't have any really legitimate businesses. Even in the best case he was donating money to largely unproductive research and pop science in order to flatter himself, and the "conferences" are well attested to not be particularly intellectually rigorous.