There was that "crash your desktop" bug caused by an ad for Teams but longer ago there was OneDrive... DropBox, Box, Google and many others could make file sharing programs that could sync successfully, but somehow Microsoft couldn't.
To add injury to insult they made OneDrive the default way to save files in Microsoft Office, but sometimes a problem with OneDrive would mean YOU COULDN'T SAVE YOUR WORK AT ALL.
If you've had that experience ONCE you are NEVER going to use OneDrive ever.
Then there was that time that OneNote was a pretty good product but Microsoft killed it by inserting at least five icons on and around your desktop (practically up your nose) signalling that it is absolute garbage that they're trying to force up your A*.
Google kills products after the launch, but Microsoft kills them in the process of launch with it's internal advertising.