From the website (Technology):
Our patent-pending centrifugally-stiffened three-wing design unlocks an entirely new mode of operation for Airborne Wind Energy.
Centrifugally Stiffened Rotor (CSR) as a model for an AWES? is not new as such. I think (before Mark D. Moore) Billy Roeseler developped something resembling a CSR, calling it:
THE EFFECT OF RIBBON ROTOR GEOMETRY ON BLADE RESPONSE AND STABILITY
Concerning scalability I see a possible issue as the centrifugal force decreases when the diameter of the rotor increases. That said bank angle is also a mean to favor rotor expansion:
As presented in the sketch, it seems that each blade pitch is controlled cyclically by the respective tether that descends towards the intersection. Controlling the blades this way while ensuring an expansion that allows for tensioning the triangular tether arrangement should be something very difficult but not impossible.