News of the closure of the PS3, Vita, and PSP PlayStation Stores sparked a lot of concern. First it was discovered that some developers who were still making games for Vita hadn’t been told about the store closures, which created a lot of problems and canceled games. Many also take issue with games being made permanently unavailable, particularly digital-only games that haven’t seen a re-release of some kind physically or on a different platform. VGC did a full analysis of the digital-only games across the three storefronts and found that roughly 2200 digital-only titles will no longer be available for purchase come the store closures.
Here are the full estimates that VGC came to in their research of the PS3, Vita, and PSP stores:

~630 digital-only Vita games ~730 digital-only PS3 (PSN) games
A small number of digital-only PSP games
293 PlayStation Minis
336 PS2 Classics
~260 PS1 Classics (particularly on PSP and Vita)

VGC notes that a “vast majority” of those 2200 games are available in some way on other platforms; either older PlayStation consoles or PC. The PS1 and PS2 classics are the obvious ones here, but a number of games in the other categories exist elsewhere too. Other games will become Xbox exclusives, with the only other versions of titles like “Beyond Good & Evil HD, Lara Croft and the Guardian of Light, Rayman 3 HD, Far Cry 3: Blood Dragon, Castlevania: Lords of Shadow ? Mirror of Fate HD, SoulCalibur II HD Online, Residen...