Why not? they just put out God of War, Detroit Become Human, and Spiderman within 5 months of the same year. Not to mention Shadow of the Colossus earlier in the year. Plus it's easier to fit more games in a short time earlier in the generation because the library is sparse.
I'd guess Horizon Zero Dawn sequel, Gran Turismo 7, and a Japan Studio title at launch during Holiday 2020. God of War sequel in the spring of 2021, and Spiderman sequel in fall of 2021.
The launch year will have sustained interest just from being a new console/ new gen + cross gen titles + exclusives from 3rd parties + new Ip tests from Sony.
Sustained interest after 1st year will be more important for some of these games. Close to one another is possible, like we are seeing, but not all of those in the first year I feel.