I'm not sure why anyone would think they'd be selling the games in their actual stores, it's like people didn't see the second sentence of the headline.
"Retail giant planning on expanding its online sales catalogue"
Note the word "online". I remember years ago they sold stuff only through their website, mostly older crap in horrible condition that they just wanted to get rid of. I'm guessing they're going to set up something similar to that only without clearance prices.