I would say the biggest evidence for Square Enix trying to sell was selling Edios for so cheap. With how hot acquisitions are, selling them for a measly 300 million screams "we're cleaning up the balance sheet for a sale." There was no good reason to not hold out for more.
I have my doubts of Sony buying them. With SE's current market cap, Sony doesn't have the cash to buy them outright (this is before considering a premium they'd have to pay). They'd either have to do a cash/stock deal or get debt. To address the comment question in the thread of "why would Sony buy SE", well, it's a few reasons. First, Sony needs something to respond to Microsoft. For one, it keeps Final Fantasy and other titles off Game Pass and keeps them on Sony's system. It also looks good to investors. With Microsoft buying Bethesda and now Activision, it at least shows the investors that Sony wont get totally locked out of the market.
The other big reason is to take back RPGs from Nintendo. See, there are a few titles that are "key" titles. Fans of a genre will buy the console if it has the Key title on it which results in more games of that genre on the system. If Call of Duty is on a system, then shooters will come to that system because thats where all the fans were. Halo was a key FPS title which is why the XBox and 360 was the place for shooters. Final Fantasy has been this for RPGs. The SNES was the RPG king until Sony took the crown. Nintendo took it back when Final Fantasy 3 game to the DS. By locking a lot of RPG series off Nintendo, Sony will be the defacto place for them. By the by, Sony is doing this already with Fighting games buy buying up EVO.
Last edited by VideoGameAccountant - on 07 August 2022