Sadly, the lock-in is pretty extreme… as is user inertia. Office 365 has made the problem worse as well, even if you have something like OnlyOffice that does a good job of compatibility with Office, it can’t sync with OneDrive.
If you collaborate with non-technical people, they will expect you to work in Office formats, and won’t even entertain discussion of any alternative.
The thing is even if AI could do all that (which is doubtful in my life time), you would still need someone to prompt it with something interesting. And CEO types have never had an interesting idea in their lives