Probably Sony wanted to acquire devs or pubs and had the money, but dediced to leave it for another time because they may have asked them and none of them wanted to sell.
Some of them don't sell because they don't want to sell and don't need to sell. Some people sell even if they don't want because their finances suck and their only alternative is to fire a huge portion of the company or to go bankrupt and selling is their only option to avoid it.
There are people who don't want to sell. And between who are open to sell, they never would sell to certain companies: only would sell to certain ones.
PS worldwide sales -counting both digital and retail- are way, way bigger than the Switch ones.
Japan is a small portion of these worldwide sales: this is why all Japanese companies stopped making Japan only games, or games targeted mainly to Japan, and instead target a worldwide audience.
No, in the case of gaming SIE makes >25B in revenue per year (with billions of profits) and MS makes around 15B (with very likely billions of loses).
If some day CoD leaves PS (for minimum 10 years will stay there), most CoD PS players will continue on PS playing other games. So Sony won't lose most of these profits.
CoD will continue so its profits will continue. Sony will spent the marketing budget they were spending on CoD now in other games, very likely 1st party shooters. So it will be more profitable for Sony specially considering Sony gets 100% of that revenue instead of 30% or 20% (meaning, they need way less sales with 1st party games to make the same revenue and profit than with CoD sales).
Let's say CoD has a 80%-20% deal. A 1st party game of the same budget and price would need to generate 5 time less of revenue to generate the same revenue to Sony. So let's say a CoD sells 10M units on PS. A Sony shooter would need to sell 2M units to make the same amount of revenue.
Regarding profit, obviously the CoD marketing costed Sony less money than the one needed to make a 1st party AAA GaaS shooter so would need to sell way more than these 2M to get the same profit they were getting from CoD. But well, the recent Sony AAA sold or are in track to sell over 15/20M units. Some of their shooters will sell around that (in most cases less I think, but on top of that they'll get way more money from the DLC/MTX/passes/etc).
In 3-5 years:
- Sony will have in the market like half a dozen 1st party shooters
- SIE's revenue and profit coming from shooters will be way higher than now
- As a result of SIE growing their investment in all areas (not only in games, software, 1st party or shooters, they will be generating way more revenue and profit, and their userbase will grow continuing the current trend
- CoD PS revenue and profit will represent a smaller percent of the total SIE revenue and profit than now
- CoD PS MAU will represent a smaller percent of the PS MAU
- Some CoD PS players will stop playing CoD because moved to the Sony 1st party shoters
So if CoD would have left now Sony wouldn't be worried because only a tiny portion of their userbase actively plays it and it represents a tiny portion of their revenue. But in a few years, CoD will be even less important for SIE.
And well, to leave PS would be a super idiotic idea for MS because putting it day one on GP most of the (non-mobile) CoD revenue is going to come from PS because they will lose a big chunk of the PC and Xbox sales. So make sure MS will renew the deal 10 years from now.
Most of the top publishers or developers are having record finantials and are growing, or are a family business. Meaning they don't want to sell. And if they don't want to sell there is no acquisition.
On top to that Sony would have to face regulators with any big acquisition and would have more issues than MS is experiencing now:
MS had issues with regulators with the ABK acquisition in markets where Sony is outperforming them 4:1.
Imagine how regulators would react if that acquisition was being made by the one who has a 4:1 advantage.
It is not like going to the grocery and buy a bag of potatoes.
Maybe they would like to do it but they can't because the companies they would like to buy don't want to be sold, or because they know that regulators wouldn't allow them to buy these companies.
So maybe their best option is to follow other strategy: to poach key talent hiring them in the studios Sony already has. Or to tell key talent from these companies to fund a new team to make a game that Sony would fund and if it works and both agree Sony could buy them (you know, like Kojipro, Firewalk, Haven, Deviation...). Or maybe are telling these companies to reorganize branching out into a separate new company the portion that Sony wants to buy, as they did with Lasengle and as apparently maybe is happening in Square.
Btw, do we know who is going to publish the games of Tabata's new studio JP Games? I assume Sony may be interested.