Software like this still under-estimates the strength of network effects and inertia. With 3 examples:

1) We have seen this effect with Mastodon. Even when Twitter / X was down, hundreds of millions of people waited for it to go back online and never stuck on Mastodon when they struggled to migrate, or even could not choose an instance.

2) GitHub, no matter how unreliable it is and will surely go down next week, tens of millions of developers continue to use it rather than actually self-hosting.

3) The exact same thing with Claude or ChatGPT going down several times a month. Users continue to use both of them instead of local models that don't phone home.

With the Microsoft outage, hundreds of millions of users will continue to use Outlook and the suite of Microsoft software including Teams; because all their emails and work is on there.

So they just cannot just migrate away from it to LibreOffice which they see that as a downgrade. It is far harder than it sounds due to inertia and most open source projects still do not get that in 2026.