Well,
@David Ricardo 's post basically explains what ISN'T a long-term solution in far fewer words than I could. What I do know of that era where Sony recovered with PS3 (I'm not super versed in that myself TBH, but a lot of things can be deduced by just looking at it in hindsight), they did many smart things, namely:
1: Cut the fat. VAIO computers weren't doing anything and costing a ton to make. Cutting VAIO to pour more focus on the console was the smart decision
2: Double down on console exclusives that appealed to core gamers at a time where PC gaming was still recovering, Nintendo was starting to lose players to mobile, and Xbox was neglecting core enthusiasts in their own console ecosystem with redundant 1P. The goodwill and improved market performance for PS3 in the last 3-4 years directly benefited the PS4, among other things.
Now look at the suggestions people are saying for Sony to do, to improve stocks and margins this gen:
1: Sell off the Financial unit. AFAIK, the Financial unit has been one of the most consistently profitable sections of the company, and probably has some of the lowest operating costs associated with it. Selling this unit off, IMO as an outsider with only cursory info, would seem like the complete
OPPOSITE of what they did with the PC/VAIO unit. If anything, looking at the relative operating incomes, you'd think Sony would push for significant restructuring of the Sony Pictures unit well before selling off the Financial unit.
2: Do Day 1 on PC for all 1P releases. This is simply suicidal for the PlayStation brand. The exclusives act as distinguishing differentiators for the brand within the gaming market, and a gateway for hardcore & core enthusiasts, who are also early adopters (and have the highest ARPU on average), to jump in and set momentum in place that positively attracts mainstream and core gamers to buy in later on (as one of the big factors, but not the only one).
Exclusives have other benefits not tied to this, such as affording more targeted resource spending, better platform optimization, and fostering a sense of creative competition for devs (among the market, among each other, and among their own previous work). But there's also the fact that they help give platforms an identity and that identity helps with the branding, and getting the hardcore & core gamers, who become the early adopters, who set the momentum that helps influence mainstream & casuals to jump in later on. It's all connected, and getting rid of genuine exclusives for a Day 1 strategy on PC destroys the entire chain and sets in big platform decline.
PlayStation needs its exclusives, arguably now more than ever. Sony doesn't have vested interests in PC like Microsoft to where throwing away their console base for PC gaming becomes a write-off. So without the vested interests, it makes zero sense for them to pursue that type of strategy and allow their gaming business to be much more at the domain and control/influence of direct competitors. Nintendo gets it; Sony needs to get it.
If anything Sony should be looking at what things platforms like Steam do right, that PlayStation could implement on their platform to improve it, and make the console even more appealing in doing so. And with games, that means prioritizing big, medium, and small exclusives as much as possible. Even if they want to bring the games to other platforms, make the port windows make sense so PlayStation console owners aren't waiting longer to get 1P games, aren't getting more bugged 1P games at launch, and can always count on getting new 1P genuine exclusives within a reasonable window a game gets ported to other platforms like PC.
Also would say, a lot of the money spent on the PC ports could be better spent on doing more 1P AA titles, and getting a higher ROI on them. Insomniac suggested that themselves in the data from the ransomware hack.
What is also crazy, is that the people who keep saying Sony should do Day 1 for PC in particular, just conveniently pretend Microsoft didn't
JUST buy two massive 3P publishers in large part to increase their own gaming revenue and profit margins. But now that people are asking what Sony can do, suddenly 3P publisher M&As just disappears as a topic? If M&As were supposedly so beneficial for Microsoft, why wouldn't they be for Sony? It's these people who expose themselves and their hypocrisy. They either have to admit they're complete hypocrites, or admit that 3P M&As aren't worth it (meaning Microsoft just wasted > $80 billion), or admit that the only way to make big 3P M&As work is to basically go multiplat (reaffirming the notion that Microsoft are doing exactly that and trying to ease their diehards into accepting it).
No matter what way they try to spin it, it will ALWAYS force them to reveal an uncomfortable truth about Xbox, and a lot of us don't want PlayStation to follow down that path. That's why we're so vocal in the first place, almost to the point of sounding jaded or very critical of certain things (some WAYYY more than others o.0). But I know from my POV, it's because I genuinely want to see PlayStation thrive; it's the brand that best represents gaming and has been around since my childhood. It's also the brand that has routinely shown it best understands the (non-mobile) gaming industry, and I say that even while having tons of appreciation & love for Nintendo, classic SEGA and (quite less so, but still there) Microsoft.