Fair critique!
A less all-or-nothing approach could be to migrate Members of Parliament and departmental executive down to management… maybe even support staff. That group makes decisions based on the products from operational folks. So they can deal with a basic office suite. There’s a big savings there.
At the operational level, things would get expensive because of the specialized and in-house software for which there are no alternatives except Windows.
I don’t know enough about IT to comment on the feasibility of supporting that scenario.
I didn’t catch this in the content posted by OP, but I thought it would be interesting to mention: GCTools. It’s a suite of collaboration and document management tools. I think they’re all open source. ^But ^I ^don’t ^know ^anyone ^who ^uses ^them.
Edit: Can’t superscript. Fuck it