NGL, in my personal opinion this could actually be HORRIBLE for Sony if they let it happen. Disney is in a shitton of debt last I checked, and the parks haven't been at their best of late (though they've slowly started turning that around). Disney has had to borrow loans repeatedly due to overspending on the Fox acquisition, and let's just say some of the "choices" they've been making with various properties these days (including pretty much sullying Star Wars) haven't gone over well with a lot of fans.
On the other hand, it could be immensely beneficial for them to build off of some of Sony's IP. Games like Rachet & Clank could actually get a good animated adaptation with Pixar maybe giving it a shot. Speaking of, there'd be a lot of 3D design and animation talent studios like Pixar and some of Sony's teams could share (though doing film animation is a different ballpark than game animation, from what I've seen been said). Getting certain Sony studios to make games based on Disney properties would probably ensure guaranteed critical and commercial hits, too.
But, it just feels like a deal that'd benefit Disney a lot more at this point in time over Sony, IMO. I also wonder if it would complicate Sony's deal with Netflix. Finally, this actually COULD be veering into a monopolistic situation; Disney has already been accused of abusing power with theaters over the years to favor Disney's films over competitors, now they'll get to do that with Fox AND Sony Pictures movies, as well? There aren't too many major film studios in the industry and I think with this acquisition Disney would have over 50% of the market, which would be grounds for potential lawsuits. Only way to avoid it would be to spin off Sony Pictures into its own entity, but then that negates one of the chief reasons of Disney making the deal (to get Spider-Man film rights for the MCU). This is already on top of Sony possibly having too much flex with anime distribution in the West thanks to owning Funimation and now Crunchyroll.
What I'm saying is, if Disney does acquire Sony (which I dunno will happen; how credible is this rumor and its source btw?), depending on the particulars of the deal it could open up legitimate grounds of talks regarding corporate consolidations, anti-competitive practices, monopolies etc., at least regarding the film side of things. It's gonna be interesting to see if anything of substance comes from this rumor, but I have my doubts.
EDIT: A lot of people keep saying "Japan wouldn't allow this", and while in probably any other instance I'd say they are wrong (it's not like foreign companies HAVEN'T purchased Japanese companies before; Microsoft basically did so recently getting Tango Gameworks through the Zenimax purchase), in THIS case, I think they are actually correct.
The reason being that while as a gaming-only entity there's grounds to debate if Sony would be considered a "protected industry entity" (I mean, their PS performance in Japan has been declining every gen and that looks to continue with PS5), Sony is still an electronics juggernaut, and they're also involved in the financing field. Pretty sure they also have involvement in providing products and equipment to network studios, production firms, government bodies, medical fields etc. within Japan, even if PlayStation as a corporation now exists in California.
Which, actually makes me wonder if an acquisition of PlayStation specifically would be exempt from the "Japan wouldn't allow this" rule, since it's now considered an American corporation (though I'm sure Sony Japan still owns all or the majority of it), but Sony as a whole? No, I think they are too involved in other sectors of Japanese economy and would fall under a protected status from being purchased from a foreign corporation.