Sony already has way more subscribers than MS and their gaming division generates way more money than the MS one. They don't need to put their games day one on a Sony Gamepass. Or in PC.
They already are performing better than any other console platformer did in gaming history. They have no reason to change their current strategy. Their next steps: to release more great new games for PS, some extra ports of old games for PC, release PSVR2, make some movies and tv shows of their IPs, some related mobile games, to buy a few more studios and maybe to release that rumored Spartacus project, that souds promising: to merge PS Plus and Now and add an intermediate tier that basically would be a download only version of PS Now available worldwide. And to add PS1, PSP and PS5 on top plus more PS2, PS3 an PS4 games.
That would help to continue dominating their market and growing.
Maybe it's because the PC players already play Nintendo games on PC (using emulators).
In the TLOU article they mention that back then (2019) Uncharted 4 was at 16, so pretty likely is at 20 as of now.