Look, technology is impossible to stop getting ever smaller, more powerful and cheaper, so the point about economies of scale - on top of that - is correct. Moreover, when the Chinas and Indias of this world get hold of this idea - you'll see a zero removed at the end of that eye-watering $£€ figure per unit!!! Even if they don't, the US, Japan, Australia and EU will contract them to start producing the stuff for them, which means they will "clone" it for much less and it won't be totally bad...
Then, the rest of the not-so-rich world will also see the befits of this marvel!!!
If all the counties in the world - with enough sunshine hours per year - do it - that's it!!! One can try to find a flaw but this (plus other renewables, of course) is the future!!! Oil-free future for the world. At least oil-free when it comes to energy production!!! We'll see about plastics and such shite...
And even if the Arab oil-producing countries of the world are opposed to it right now, they won't be for long, when we have the technology of saving solar energy and transporting it at great distances!
And we'll get there, sooner or later... DESERTEC will be back in business, I tell you. And if they don't - others will jump in. There are huge sovereign funds in the world, just waiting for the right opportunity!
And since this is the biggest business in the world I have no fear we are nearing a solution of limitless energy for Earth.
The question will be: will it be free for everyone (bar buying a machine to collect the energy of the Sun)...???!!!???