Google, unlike all their competitors, actually give Cloud API credits to all paying users of AI Pro and AI Ultra [1] - just use those for direct Gemini/Vertex API access instead of trying to hack the OAuth of Google's apps.
[1] https://blog.google/innovation-and-ai/technology/developers-...
I think they could object to some uses of OpenClaw for that as well - for instance if someone just used a skill without caring what model it used.