Mibu no ookami
Demoted Member® Pro™
What do they really gain from buying From? While it would be a cool dev to have. It's not like they would gain a bunch new users on Sony, because most people are already playing From games on Sony consoles.
I don't think CDPR thought too kindly of Sony pulling a game from their storefront. Especially if CDPR thought it was in a playable state, then highlighted Sony's terrible refund policy.
Elden Ring sold over 20 million copies. If From can generate revenue like that on a regular basis moving forward, that's something Sony's going to want a bigger piece of.
I think you're overthinking that a bit. CDPR knows the state the game was in, pushing people to ask for refunds from Sony was a mistake, and I'm sure there was debate over it at the time. Sony was right to pull it from the store if the number of people asking for refunds was excessive.