Its actually something that could happen with their new DD focus. It would allow them to cut expenses on niche titles. All they have to do in that case is localize languages and put up on download service instead of retail,marketing etc.
This is something I've often thought the PSP is remarkably good for, yet we've never really seen it on other consoles. There's a good pile of extremely niche titles on PSN that weren't worth doing a full release for but are still available thanks to that infrastructure in place. Persona in Europe, Cladun...