Absolutely. There's stuff never released to the public. Private film, books, computer games, porn. What happens when a mass media product doesn't make it past the censors, or gains corporate backing, publishing. Deleted, no, but some person made it? Access to it. It's not standard. Why would elites have this? They have money sure, unless they're in on it, they'll have the same access. But they could commission products with that money to be kept private.

Finding it, is debatable to what your looking for. Dead Internet. Today there seems to be far more regulation in certain domains