From the article of the Publisher Limited Run Games who plans to publish digital only games in physical form like indies etc. who were only avaible digital. He explains why they are choosing the PS4 and the vita only for now
MAC: You mentioned on Twitter that PS4 projects would have a lower production cost than Vita, so will that be a focus early on over Vita titles? Are Sony products going to be the main focus for now?
JF: Sony consoles and handhelds are the main focus right now, and that's due to how progressive Sony is with allowing smaller publishers to do physical runs. I can't go into detail, but their minimum order quantities are incredibly reasonable compared to Microsoft and Nintendo. I don't get the feeling that either of the latter want to waste their time with smaller print runs. This is just one more reason on the pile of reasons to develop for Sony.
Due to the proprietary cartridge format of Vita games, production costs are about 50% higher. With our earlier releases we plan to stagger them by releasing PS4 discs first, when possible, followed by Vita carts. We'd do this to utilize any gains from the PS4 run to fund the Vita run. That said, we definitely plan to publish Vita exclusive games - we'll just have to stick to smaller print runs on those until we've built up our funds a bit.
MAC: What are your plans for working with other devs on limited print runs? Anything in the works already?
JF: We currently have a list of over forty games that we'd love to bring into the physical realm. It's a good mix of PS4 and Vita titles both upcoming and already released. We're already in talks with a few developers and their games are awesome - I wish I could say more! If any of your readers have a favorite game that isn't available physically, they should definitely feel free to drop our name to that game's developer.