This is obviously not happening.
Sony just doesn't have the juice to buy Kadokawa.
Sure they have the funds in terms of Kadokawa's network but not enough to convince them that it would be worth it to sell out to Sony.
They simply don't need to be with them exclusively after Elden Ring.
I don't think it is happening either but not because of funding or lack of "juice". Kadokawa's market cap is $3 billion. Sony could pay three times that in cash easily. Sony isn't going to buy an entire corporation just to get From though.