I believe the question is missing somehow the main points... even if the switch cost the double or triple there are several strategic advantages that should take into account:
- use Linux allow to growth the number of high specialized professional workers, investing on local resources;
- invest in a local network of specialized companies, instead of financing the silicon valley with ours public money;
- be less dependent by abroad technologies, get a major control of the system used;
These are few that come to my mind...
What would be really interesting to know is the percentage of the investment that stay in the region/country following a linux-based/opensource IT infrastructure for public bodies vs the current closed M$|OSX paradigm.
Furthermore, distrobox allows you to define the list of packages to be installed, see:
https://github.com/89luca89/distrobox/blob/main/docs/usage/distrobox-assemble.md