None of them.
I just don't use any of those platforms enough for it to actually be worth it. The value just isn't there for me. Gamepass sounds like it could be okay if it was actually available over here and if Microsoft does eventually put a larger number of PC games into it, but the rest don't really make sense given what they offer.
I did subscribe to one month of Humble Bundle once just to get the game they were advertising, since it was much chepaer just for that than actually buying the game by itself. But even then, out of all the extra "free" games I got, the only one I actually liked was an indie game that cost like 3€ or something, so not really much value there.