Like many "advances" in solar energy, nobody is going to care about the efficiency gains if they are overshadowed by cost increases.

The article tries to make it sound like a miracle technology that concentrates light "up to 10,000x", but that doesn't mean you get 10,000x more energy out of it, it just means that you can use a much smaller panel since the light is concentrated on a smaller spot by a comparatively large, bulky piece of hardware.

Panels are already pretty cheap, so it's not clear if the cost of a giant glass sphere, plus heavy-duty steel frame, plus tracking hardware will beat just blanketing your roof with stationary panels. It looks cool, sure, and maybe it's a bit more efficient at converting sunlight to electrical energy, but the real figure that's going to matter is the $/kW ratio.