Can’t you just go into aistudio with any free gmail account?

For many workplaces, it's not just that that don't pay for a service, it's that using it is against policy. If I tried to paste some code into ChatGPT, for example, our data loss prevention spyware would block it and I'd soon be having an uncomfortable conversation with our security team.

(We do have access to GitHub Copilot)

Good news then, your GitHub admins can enable Gemini for you without issue.

“Without issue” is an optimistic perspective on how this works in many organisations.