It’s Kadokawa that forced Sony’s hands. Sony initially only wanted to acquire the anime and videogames assets. But Kadokawa told them that only acquisition offers for the entire company are accepted.

Sony definitely had plans to buy up FromSoftware.

No, it’s really not. Especially since they already own 14% of FromSoftware directly. The only Sony bullshit is likely still going to be limited to any IP that Sony funds themselves.