There is a logical reason why Biden never released the Epstein files.
I'm assuming Trump, Clinton, Prince Andrew and other highly placed figures were mentioned. Rather than implicate those people they chose to respect "The Office of the President" and the stature of the Monarchy.
Trump, Clinton, and Andrew will all be gone in a few years but the office of the president and the monarchy are forever (in relative terms, not literally forever).
So, they looked at the long term damage vs the short term "justice". I would have chosen the same. The office of the president is bigger than one man (or two, or many). Don't you agree?