Maybe 2 - 3 years after launch, sometime late 2022, early 2023.
There are tons of PS4 exclusives I have yet to experience. Titles like Lost Legacy, TLG, Spiderman, Concrete Genie, Days Gone, FF7R are games I want to play, but I'm waiting on a sale to do so. This isn't including all the PSVR + multiplat games I want to play.
TLOU2 & Cyberpunk are only games left to release that I'm going to buy at full price.