Yes, because that's what I said.
Microsoft has hit a road block in their strategy. You would be naive to think this road block means they'll give up on future acquistions. It's not like this acquistion being blocked means all future acquistions will be blocked. There is quite clearly a line being drawn at what acquisitions would and wouldn't stand a chance at going through.
Publishers with megalithic IP like Call of Duty, GTA, Fortnite, Fifa.. those are off the table. Smaller publishers that have a track record of engaging in exclusivity are on the table. That includes publishers like Square Enix. I don't exactly know what Microsoft will go for if this acquisition is successfully blocked, but they'll have at most 66B to shop around with.
I don't think this hurdle stops Microsoft in their tracks, if anything they'll be looking for content to fill the shoes Call of Duty would have.
There is no world where MS is thinking "Well shucks, that didn't work, but hey! now we have a freed up $66b to spend on gaming!". The economic factors that even drove this sale at the very end of 2021 when it was being brokered are completely different now, as is the outlook for Xbox internally. I personally know there are very pointed questions in Redmand going on regarding leadership and failure to execute given how much was already invested into the division, contrasted to the results they are seeing.
This ATVI sale was a 1-in-a-million shot that no one really saw coming, that came from Kotick's need to preserve his legacy. The biggest problem MS had is they seemingly went into this process fully counting on them being rubber stamped and for the whole industry to do that crony capitalism thing and not have anyone try to block it.
Even by your logic - you say that mega-IP are off the table, then immediately say that MS is gonna go looking for something to fill the shoes that CoD would have; anything that would be the size of CoD is off the table. MS is not gonna buy SE, Capcom, or Bamco. The only two publishers that are left that fall under your criteria that are up for grabs are Sega and Ubisoft, and who even knows if they want to sell, Sega in particular. Ubisoft likely winds up selling to Amazon before MS (Amazon is highly invested in Tom Clancy IP, and Ubisoft owns the rights to the Tom Clancy name).
I really don't think MS is gonna go out of their way for anything large or mid-size after this. You don't put your whole biz-dev strategy on hold for 12-18 months then immediately say 'lets dive back in!'. They need to deliver, they know they need to, and this entire thing has done nothing but distract. They are drawing ever close to the end of the timeline they were given to turn this whole thing around (2017-2027).
Microsoft has said they want to break into the Japanese market. They can't do that without the games that that market gravitates towards. The Publisher selling doesn't care about their protifitability after the sale, that would be Microsoft's problem.
You're acting as if it's an impossibility. I'm not saying it's likely, but I wouldn't be surprised if Microsoft pucks up a eastern publisher. Also there are plenty other "western" devs that could be up for grabs.
MS has claimed they have been trying to break into JP for forever, but buying a JP dev doesn't necessarily get them that, nor is that an option they may even have available to them. Not just that, but you're totally ignoring that Sony will probably come up and borrow money should either Capcom or SE hit the sale block. Capcom is still a family owned business, and the family just went out and got Saudi investment - they probably don't have any immediate want to sell. SE is being heavily invested into by Sony, so much so that there have been rumors swirling that Sony actually bought SE. Bamco is a possibility, but their licenses from non-gaming sectors would make that a very complicated buy, to say the least. The only real big JP player left would be Sega, which I discussed above, and FromSoftware/Kadokawa, but Sony is a big investor of Kadokawa, and I know for a fact that Sony is the one eyeing that purchase right now.
Does this mean that MS might just turn around and buy Asobo instead? Maybe. Seems like an obvious choice that won't be too scrutinized. But I also just don't think they are gonna have an appetite for any further buys after this.