Neither the kite based solution nor the blimp based solution is fit for the purpose of serving single or few people with electrical energy.
For that scenario some kWp based on solar can be had for cheap and some kWh battery on top doesn’t cost a fortune either.
I never insinuated that the kite or blimp are the perfect solution for every scenario - rather that it may be a match for situation that couldn’t be served well by the available means.