Although I completely agree with you, pointing at LinkedIn as a success story is kind of weird.
Microsoft's new future is to be a cross-platform vendor for developers. I see absolutely zero incompatibility between Github and Microsoft and a need to shut it down. I think the Satya's Microsoft is smart enough not to ruin it.
Microsoft screwed up Skype by trying to “make it more Microsoft” whereas LinkedIn is being left to operate as before (tough MSFT is using the data for something). My guess is that GitHub will continue as before with the main change being that MSDN subscribers will likely get private GitHub repos as part of their package.
Now MSFT just needs something along the lines of Jira to replace the dog’s breakfast that is VSTS Agile project management tooling. I don’t suppose the folks in Redmond are looking to acquire Atlassian next...?
You dont pay 2 Billion, and leave it untouched, they see an earnings potential in the company given the right management and shareholders expect ROI that is higher then the average market return
Most of the discussio here is just centered around Microsofts goodwill and trustworthiness, mostly ignoring that MS wouldn't make this investment without a solid plan and path to profitability.
That doesn't have to be bad per se, I guess there are a lot of options like integrating Github well with Azure and providing alternatives to AWS CodeCommit / pipelines, ...