Let’s imagine for a moment the cost of these cheap parachutes and compare them with the cost of a 2 MW (from about $1.3 million to $2.2 million per MW) wind turbine rotor blades (22.2%).
If all goes right, about 40.000 m² of parachutes would be required for 2 MW. If parachute games are used, the cost is about $ 1 to 2 per m². If we consider changing the parachutes every year, we will have a LCOE perhaps lower (by a little, or clearly by taking account of Operation and maintenance runs an additional $42,000-$48,000 per year for the whole wind turbine) than that of a rotor and its maintenance. But if more suitable parachutes like this are used, the cost per m² is 10x or 20x, probably just like LCOE.
So parachute systems could be interesting if the cost per m² of good kites is that of parachute games…
A specific advantage of parachute (and other static or aligned) kites is its ability to fill the space, being in networks or in AWES farm in bumper car mode in order to reach a higher Power to space use ratio.
In these conditions we can understand that @tallakt would prefer to focus on profiled tethers for rigid wings…or @Kitepower going to flexible crosswind kites.