I think you highlighted the ACTUAL problem....you are worried that Google will destroy your account for harmless tests.....that is plain wrong and should be illegal if somehow it isn't....
It's extremely rare that you can compel a company to provide a service. The main exceptions are public services (e.g., libraries), utilities (e.g., power), and protected classes (e.g., you can't legally make a business that only serves white people in the US). While I could definitely understand the argument that many tech companies provide services central to our lives and the scope of what is considered a utility today should be vastly expanded, saying this should include access to a particular LLM seems like one hell of a stretch to me.
I don't think people are worried about losing access to a particular LLM. They are worried about losing access to Gmail, google docs, google photos, their phone, google cloud just because of a test in an unrelated product that happens to share the same account.