That is a space they are quite directly trying to win with their in browser suite of office tools, and chromeOS is, partly, a vehicle for that. I would be surprised to hear that G and MS partnered in that sort of a way.
I’d be just as satisfied for Google Sheets to become the standard. I have seen XLSX/DOCX as the standard format for a long time. The Google Workspace (GSuite) products don’t interoperate seamlessly, and they are not a compatible solution.
