I don't mean to downplay the work put into this project, but I don't understand the reason for spending a substantial amount of money on it. In reality, all they did was retrofit some batteries/motors/controls based on existing products available in the commercial market, to an R44 helicopter. Unfortunately, their aircraft demonstrated a level of performance that is entirely inadequate for any application. What value is there from this level of effort?
It would seem obvious to any rational rotorcraft designer that until battery technology makes significant advancements in weight and power density, a truly viable battery-electric rotorcraft will not be practical. Electric motors and controls are currently good enough, but batteries are not. So what is the point of these efforts?