They can't really give sight to the blind - from the article: Normal vision, this is not. Patients and doctors alike stress that the Argus II provides a kind of artificial vision, really a brand-new sense that people must learn how to use. Argus II users perceive shades of gray that appear and disappear as they move their heads.

So it's not like millionaires with blurring are going to be getting in line. This seems like it's for the totally blind.

Perceive also:

https://secondsight.com/discover-argus/

https://www.marketwatch.com/investing/stock/eyes/financials?...