I don't like free offerings, because what if they decide to charge someday? What if someone decides "free is not feasible, we start charging $20 per instance now".
I'd rather have a low fee now, a change from $2 to $3 is more likely and that's fine for me. But from free to not free is risky for me.
I also like smaller, independent-ish ompanies that actually care about developers. That's why I use bunny.net, transistor.fm, Plausible Analytics.