We don't even use windows enterprise for the same reason, we have legacy office 365 plans and lifetime windows licenses without the M365 addons because it saves is a few bucks per head. At our size, a few bucks a head quickly add up to millions per year. Microsoft keeps trying to dissuade us and they even pretend office 365 plans don't exist anymore ("office 365 is now microsoft 365") but they do: https://www.microsoft.com/en-us/microsoft-365/enterprise/off... . The same with their Copilot stuff. 30$ is a non starter. Our users want it but nope (and we did a trial in one big team and only 10% actually bothered to use it after the first month so I think it's more the idea of it that want rather than the actual product)
We don't use Tailscale but $6 would be feasible where $18 would be a complete nonstarter.
In fact our company is a lot more cost conscious than I am as a consumer.