The free Gemini tier as the front door is the clever part and the fragile part
at the same time.

I was looking at free provider tiers recently from the other side, as something
to build revenue on, and ran into two walls. The terms generally forbid passing
that capacity through to third parties. And "unlimited(ish)" is a quota somebody
can move on a Tuesday without telling you.

Genuine question rather than a dunk: is there a fallback for the week it moves?
The one-install-and-go pitch is the thing people will remember, so that's the
promise that breaks loudly.