alt Hacker Newshttps://lasuite.numerique.gouv.fr/ is the French government's office suite. I think this can work as long as the devs are responsive to users' needs.
They don't need to reimplement all of MS Office, just the parts they need to serve their constituency.
The challenge is engaging with external orgs. They will send you office docs and it creates friction when they cannot be reliably edited and returned. Even just opening them can be unreliable.