This is an industry with a lot of inertia, and customers are not going to be driving this change like a lot of optimists at amazon might expect. They will struggle when the tech isn't working right and prefer the old ways, as they do now.
Plus there is the rampant theft that will occur, unless you hire someone to stand there and man the door. And at that point you've spent millions on this fancy tech that your shareholders salivated over to have the same exact payroll overhead as you did when you had someone sitting there scanning items.
If this makes amazon and the dime a dozen clone startups some money, good for them, but I don't see this changing the world.
Well, who knows how much interest will truly materialize, particularly given the data leaked to amazon, but the post claims/implies that retailers reached out to Amazon and were interested in licensing the technology.