Let's compare this to Google Workspace.

Google Workspace functionality is only fully supports Google Chrome.

Google Workspace doesn't support a number of key features on Firefox, Safari & Edge - as denoted below.

https://support.google.com/a/answer/33864?hl=en

So how is what Microsoft is doing, different? They are only fully supporting Microsoft Edge (much like how Google only supports their own browser)

> Let's compare this to Google Workspace.

Well, Google Workspace is a dumpster fire. Anything that I can't run offline is a dumpster fire. That's a hill I'm willing to die on.

> Google Workspace functionality is only fully supports Google Chrome.

That's by Google's "choice". It's definitely not a technical decision.

> Google Workspace doesn't support a number of key features on Firefox, Safari & Edge - as denoted below. https://support.google.com/a/answer/33864?hl=en

I can tell you from personal experience that the only reason Google Workspace doesn't "work" on Firefox is because of user-agent sniffing and similar countermeasures deployed by Google. There's absolutely no technical reason that the disabled features cannot work on Firefox.

> So how is what Microsoft is doing, different?

It's in fact not.

> They are only fully supporting Microsoft Edge (much like how Google only supports their own browser)

No, they are only fully permitting Microsoft Edge (much like how Google only fully permits their own browser).