Won't be much more than that, as it seems pretty realistic going by Sony's data of PC releases from the Insomniac leak:
"
The data is most likely current as of February 2023 (the slide reads February 6, 2022, but that’s probably a typo since it shows sales of more recent games), so there is no information about titles like The Last of Us Part I (we do know that it
sold 368k copies as of April 2023) and Returnal.
- Horizon Zero Dawn — 3.3 million copies sold (this is up 1 million from the 2.39 million mark previously disclosed by Sony in 2022);
- God of War — 2.5 million copies sold (as of March 2022, it sold 917k units on PC);
- Days Gone — 1.7 million copies sold (825k copies sold as of March 2022);
- Marvel’s Spider-Man Remastered — 1.3 million copies sold (in March 2023, the PC version reached 1.5 million copies sold);
- Uncharted: Legacy of Thieves Collection — 483.2k copies sold;
- Marvel’s Spider-Man: Miles Morales — 450.2k copies sold;
- Sackboy: A Big Adventure — 62.9k copies sold."
Insomniac Games suffered a huge data breach last week that resulted in tons of internal documents leaking online. Some of them shed light on the budgets and profitability of the studio’s games, as well as sales of PC ports of PlayStation’s first-party titles.
gameworldobserver.com
PC sales for Sony games aren't that impactful.