I think we could change our methodology to identify a plausible AWE direction.
First, don’t compare with traditional wind turbines, because we’re too far removed from that.
Then, try to see what’s wrong with the various projects. All are penalized: crosswind kite, turbine + aerostat, turbine + kite lifter, tethered-aligned yo-yo, etc.
Ultimately, that’s what we’ve already done. But if we continue, we’ll be able to get a clearer picture and understand why the superior high-altitude wind resources aren’t enough to compensate for the weaknesses, starting with efficiency and reliability.
However, it’s not impossible that the constant examination of AWE possibilities will break through the impasse thanks to scientific discoveries. Everything, therefore, remains to be seen.