I don't know, I wouldn't welcome it either that's for sure. But the github acquisition went pretty OK so far. I don't think it will be disastrous.
I'm referring to the various overtures between MS and Canonical lately, a lot of collaboration going on. https://pulse.microsoft.com/en/transform-en/na/fa2-canonical...
I don't think it would be the end of desktop Linux but it would mean a focus away from the core principles of Linux (which Canonical was not really that good at following anyway).
