The only Sony "franchises" that are still going are God of War, Grand Turismo, Horizon and TLOU remasters.
Sony actually has far more dead IP's that they're not using anymore than they do with actual IP's:
LittleBigPlanet
Resistance
Killzone
Wipeout
Twisted Metal
Parappa the Rapper (not really a "franchise" but still counts)
Patapon
MotorStorm
Jak and Daxter*
Sly Cooper
The Legend of Dragoon (this only had one game but it could really use a remake)
Medieval (can't believe they actually chose to remake a mediocre PS1 game like this instead of TLOD)
Uncharted
Gravity Rush (Sony can't even be assed with doing a PC port)
Syphon Filter
Bloodborne (for some reason Sony can't be bothered to remaster this goddamn game on PC/PS5)
*Trust me, you really don't want current year, woke-infested, Neil Cuckmann-lead Naughty Dog to remake Jak and Daxter. Let it stay in the past.