That's your narrative you chose, nothing else.
Every studio has that story, almost every one of them.
And you cherry picked hard from my post, because Insomniac has been previously rated one of the very best places to work. You don't think they retain talent?
Anyone thinking a new studio like this can pull off an Uncharted 4 or Devil May Cry 5 out of their wazoo and really sell consoles is reaching as far deep as possible.
People are just looking for explanations when there aren't any. You can't build a mature studio in a year or two that delivers AAA just because. Can't throw money at shit, you think people learn from watching Microsoft over and over again but apparently not.
CAPCOM. SEGA. Eidos. IO Interactive.
They don't just pull Resident Evil 2, Devil May Cry 5, Yakuza, Hitman, and other games out of their asses. They actually have developed massive amounts of experience and workflow to make those games not only efficiently but well.
I'm all for Microsoft making their own studios, but people acting as if they didn't do this 15 years too late are just bullshitting themselves and I'm not about to let such a ridiculous narrative be continuously perpetrated lmao.
I didn't cherry pick, I chose those because they were either first party studios from Sony, whom you were praising, or studios from which Microsoft had just hired people. Insomniac is a good studio and delivered a great game when working with Microsoft. Playground is another good example. My point was simply that every big company that owns several studios has good and bad stories, and simply saying that Microsoft is terrible at building studios from the ground up while Sony or Nintendo always nail it is not true.
People here have dismissed the value of Turn 10, making incredible games from day 1, just because they are "formulaic" racing games yet Polyphony has decades of experience in the genre and struggles more and more with every new release. Sony closed a racing focused studio earlier this gen, someone could argue they aren't good at delivering racing games, perhaps the new leadership at Sony such as Layden don't understand the genre. However, I'd say that's probably not true.
Simply, every company has failures and successes, and stating that Microsoft will struggle to build a new studio based on their history is, actually, cherry picking the parts of their history that you want to remember, the ones that you want to ignore, and do the same with the competition to form an argument that in reality has no correlation with the future.
Edit: by the way, 15 years ago? 15 years ago Microsoft had almost every talented western developer making exclusive Xbox games and about to go into the most successful period of their history while Sony was about to go into the hardest of theirs with the launch of PS3 and loss of exclusivity of most of their most iconic franchises. You are not even good at trolling.