Not really bothered right now as what we're seeing is just the logical evolution from having only new IPs, or reinventions dominating Sony games in 2017/2018 with Horizon, Spider-Man and God of War. All those games were huge hits and were guarenteed to get sequels, and as they all came out close to one another, it makes sense that the sequels will come out in close proximity too.
This is just a cycle that will end up with a few years (2025-2027, I'd bet) where we will see more new original IPs or reboots and less sequels once again. Let's not forget that just yesterday Cory Barlog confirmed he's directing another game for Santa Monica, that will almost certainly be a new IP. And, as most people have already said, it's not as if Sony hasen't released a new big IP this very year.