With digital distributor Triton now six feet under, those who purchased Prey are now unable to use their copies. Fortunately, 3D Realms has already set into motion a solution: by sending the disenfranchised boxed copies of Prey to their credit card addresses. Furthermore, Triton staff member OBWANDO promised that they're trying to get a patch through that removes the downloaded copy's dependency on Triton.
Tipster James raises an interesting question: what would happen if Steam shut down? Presumably, Valve would give enough of a warning to distribute patches that allow the games to work without Steam, but the Triton incident reveals some unintended ramifications of digital distribution.