Earlier quoted context omitted.
Many apps (e.g. EteSync and WireGuard) are almost useless if they don't work for everyone within a certain group. A more extreme example is a messaging app. Will not having iOS support for a messaging app lose you 40% of your users? No, it will lose you 100%. In WireGuard's case it's maybe less obvious than messaging, but if WireGuard doesn't work on macOS, it's enough to have one Apple user in your whole organisatio…
What organization is it, that can't order an employee to use a different OS on a work computer?
Additionally, companies don't choose their whole software stack based on their VPN solution. They would just change a VPN solution if it's incompatible with what's there.