I cannot think of one good reason anyone with political power would have to keep him alive. Certainly none of those names in his black book wanted to hear their names associated with him at trial, and pulling those strings does not seem likely to increase the political power of the USG. Trump would be extremely politically harmed by charging and prosecuting Bill Gates, officially encouraging the charging and prosecution of Prince Andrew by the UK, or even going after much less politically powerful individuals such as Ghislaine Maxwell due to her obvious connection to Mossad.

Pretty much everyone wanted him dead. Honest folks just wanted him executed after a trial that enabled his criminal associates to be charged and prosecuted too.

As to a deadman switch, given the political implications of the matter, whoever was holding it is probably unwilling to die for Epstein, who cannot reward them for doing so now. Any former allies would be strongly encouraged to switch allegiances by extant circmstances, IMHO.

Thanks!