problem with this is the size of these companies, sony is not a megacorp in same tier as MS and they likely wouldnt be able to allocate funding for large gaming acquisitions such as EA

Being the market leader, Sony will have a much harder time making larger acquisitions than MS did, and this ABV merger didn't exactly breeze through.

but the later Minecraft games that were made after the Microsoft takeover have, for the most part, only come out for Microsoft platforms.

Today I've learned that the Nintendo Switch and PS4/5 are Microsoft platforms. Pretty much every console Minecraft game has made its way onto these systems.

Minecraft Dungeons, for instance, never came out on GNU or macOS.

Works just fine on Linux using Proton (they could totally prevent that if they wanted to) and Apple is pretty hostile to macOS gaming anyway.

That's not true at all. Minecraft Bedrock Edition, Minecraft Dungeons, and Minecraft Legends are all available on both Playstation and Nintendo Switch. Bedrock Edition is available for Chromebooks. Dungeons and Legends are both on Steam and will run through Proton.

Bedrock Edition is not on Steam and unavailable on Linux and Mac. Dungeons and Legends aren't available on Mac. In a strange twist, Education Edition, which is just Bedrock Edition with classroom oriented features, is available for Mac though.

Thankfully Minecraft Dungeons does work via Proton, though I'm not super familiar with macOS so I'm not sure if Proton works for macOS given that Apple's platforms use Metal rather than Vulkan (though I hear a translation layer is being worked on for Vulkan->Metal).