alt Hacker NewsGitHub have proven the ability to execute very well when they _want_ to. Their product people are top notch.
Given the VP of GitHub recently posted a screenshot of their new stacked diff concept on X, I'd be amazed if Graphite folks (whos product is adding this function) didn't get wind of it and look for a quick sell.
This seems very very implausible to me as an explanation of what prompted them to get acquired. They wanted to get rich and stop having to fundraise!