That's because LOU is a smash hit franchise. Sony's shotgun approach to games for generations has lead to lots of misfires, but some key winners.
The second they get some tentpole franchises that are huge sellers, it's sequelitis, remakes and collection packs going forward. Many of these studios have made other games in the past, but currently and future its solely focused on their hit franchise instead of making a different franchise game or IP.... OK, Insomniac is also making a Wolverine game as their new IP.
ND: LOU and UC
Guerrilla: Horizon
Sony SM: GOW
Insomniac: Spiderman (and Wolverine which is another Marvel character)
PD: GT