They're not "buying" anybody as big as From or Platinum. That said, there is a bit of history with Platinum, albeit troubled.
Also, these are two-way street deals. Mid-tier companies who they have a history with and need some kind of financial stability. That history is important. Note Phil name-checking Kung Fu Chaos as a shared DNA with Ninja Theory, etc.
Honestly, look at their studios. It's not as predatory as some make it out to be, and they've been holistic about their approach:
Created Studios
- 343
- Turn10
- The Coalition
- The Initiative
- Xbox Global Publishing
- Age of Empires team
Second-Party Studios (consummated partnerships with history)
- Playground Games (Forza Horizon)
- Undead Labs (State of Decay)
- Compulsion Games (We Happy Few early access)
Purchased Studios (which people seem happy about)
- Rare (people kind of accept this as part of Xbox now)
- Minecraft / Mojang (good use of brand; kept it away from Notch)
Outright purchases... but all with history
- Obsidian (prior history; cancelled "Stormlands" game)
- InXile (history with Obsidian)
- Ninja Theory (history with Kung Fu Chaos, etc.)
- Double Fine (history with Psychonauts, etc.)
I dunno. I get that people are sort of frothing, thinking of what MS needs to do, but every time these threads come up, it's hyperbole. They had a huge gap in their first-party studios, and now they're going to be a content spigot for Game Pass. They need studios, but they're not just going to buy CDPR, From, EA, Rockstar and call it a day. They need a healthy industry.
None of the purchases, from where I sit, are completely predatory. Two-way streets with companies who had some kind of history. Sony has done the same thing with half of their studios, some of them consummating long-term partnerships with them.