Microsoft doesn't want Google to control the codebase Edge is based on and doesn't want anyone to counter the MSFT + OpenAI partnership, and the DOJ is trying to hand them their wishes.
Hopefully the judge rejects this overreach and rules on lawsuit scope.
I remember the time before google. We were all stuck IE with no competitive browsers and everyone was using Windows machines. Now we have three browsers and multiple platforms. I just bought a Chromebook plus, that can run linux apps but is easy enough for my kid to use. My wife uses windows laptop and I use a mac. We have Amazon Echos through out the house. We have 4 major players in the tech space instead of one. Apple, Google, Microsoft and Amazon.
And those four players are more of a cartel than competitors, having agreed to mostly stay out of each other's ways.
The primary overlapping markets between them are consumptive devices and cloud services -- which I presume they're all in because they consider it strategically important enough to their other businesses to incinerate money.