Magnitus: If GOG is gonna be serious about putting in the work to really help preserve a big chunk of their catalog in the long run, especially if they port to Linux or make drm-free multiplayer work, as the catalog of games to maintain grow, they might not be able to finance it in the future with sale revenues alone.
Assuming that they do it right, for preservation and not to enshittify everything in their walled ecosystem like Steam does, I could see myself financing that work with a subscription. I'll keep an open mind and we'll see how it goes.
But we must remember that GOG is still a publicly traded business and not a charity. GOG may have lofty preservation goals, but they need to figure out how to do that within the boundaries of their financial means. It's no different from anyone's personal goals. We all may have hopes and dreams of things that we would like to do, but ultimately we have to do what we can within our own financial constraints.
If GOG's preservation spending is outpacing their income from the preservation, then they may need to reconsider their strategy. (Such as taking a larger cut of sales from Preservation Program games, charging upfront fees to publishers, etc.) Otherwise, it doesn't make sense for me to donate cash to GOG to they can accomplish their goals unless GOG is willing to donate money to my Ferrari fund. Fair is fair.