I went to Radio Shack looking for a 20’ HDMI cable...$50. I went online to Amazon. $9. Hard to compete like that.
In 1970 there was no Amazon. Last week I bought a Sony HX50V Camera from them. I got the camera and leather fitted case bundle with same day delivery for Fifty less than the camera would have cost alone at BestBuy.
I fear Radio Shack will not be the last.
Probably $5 on eBay with no delivery charge or tax. Yes, hard for bricks and mortar to compete.