Debeers is on its way out. They may come up with something to stay relevant, but they are getting desperate to come up with ever more sophisticated machines to detect man made diamonds from their mined blood diamonds.
It will be stopped by millions of smaller stores being on a single platform with the ability to get a product in 1hr to overnight within the same metro area.
The challenge is to categorise the inventory at those millions - can start with thousands - of local stores. Once that happens, watch out amazon.
ppl said the same thing about google in 2005. Same thing about Microsoft in the 80's and 90's. Both companies are doing better than ever. IBM is still around and is still huge.
IBM > Microsoft > Google > Duck Duck Go