Many larger corporations strictly control what software is available and allowed to be installed.

On Linux, this is commonly accomplished using Red Hat Satellite [1], although many other tools are also available to use instead.

Getting approval to install something like Vim can literally take months of effort and arguing.

[1] https://docs.redhat.com/en/documentation/red_hat_satellite/6...

I worked at a place like this and we had a software registry, where if you had installed something and it wasn't on the registry somebody would start sending you nasty emails. This kind of thing would happen all the time: maybe the Linux machines weren't in the scans, or anything that came with the OS was whitelisted.

But if you wanted to install it separately on a computer that didn't have it already, then you'd need to get it “approved.”