I say this slightly nervously as a Cloudflare customer who serves some amount of binary data. One message is "it's ok if you're on a paid plan". Another is "it's not ok at any time". My suspicion is that "it's ok unless we notice you".
If you could come up with consistent understandable messaging that would help a lot. I don't mind paying (stay competitive against AWS and Hetzner and that's all I need) but the uncertainty is not good.