Could variants of hoop stress also apply to soft kites?

Concerning scalability, I don’t think there is a major difference between single skin kites and ram kites.

It’s just a hypothesis on my part, but perhaps the scalability curve could look like an asymptote? A little more than linear at the beginning, and much more than linear at the end.

A blimp (flexible airship) becomes increasingly heavy as he grows. “Why Blimp Technology Doesn’t Scale Up Well” could perhaps apply to soft kites.