I don't think that's a fair comparison. Google Maps, Google Calendar, Google Drive, Google Search, Google Chrome, Google Ads, etc. are all clearly completely different products which have very little to do each other, they're just made by the same company called Google.

GitHub is a different situation. There's one "thing" users interact with, github.com, and it does a bunch of related things. Git operations, web hooks, the GitHub API (and thus their CLI tool), issues, pull requests, Actions; it's all part of the one product users think of as "GitHub", even if they happen to be implemented as different services which can fail separately.

EDIT: To illustrate the analogy: Google Code, Google Search and Google Drive are to Google what Microsoft GitHub, Microsoft Bing and Microsoft SharePoint are to Microsoft.

It depends, for example - I would consider Google Drive uptime as part of say Google Docs’ overall uptime because if I can’t access my stored documents or save a document I’ve been working on for the past 3 hours because Drive is down I would be very pissed and wouldn’t care if it’s Drive or Docs that is the problem underneath I still can’t use Google Docs as a service at that point.