I think one of the reasons people remember radio shack of yesterday so fondly and are so tweaked at what they have become is because at one point pretty much all electronics, consumer products and components, was once the domain of the nerd. Your typical high school cheerleader would have been interested in about 0.1% of what a store like radio shack sold. The way our world works now is that the cheerleader knows more about computers (well certainly cell phones) than her parents. It doesn't help that even the nerds consider much of consumer electronics as disposable black boxes. It's not economical to sell components out of a physical store, especially when none of the other things in the store could even use them. It's not like you are going to fix your cell phone with any resistor you will find in the resistor bin, not unless they also sell stereo microscopes, ultra fine soldering irons, ultra tiny tweezers, etc....
The Oz version,(Tandy's),was never a "hardcore" Electronics Store.
It always sold consumer stuff as well,particularly in the late '70s,when,like almost every other type of shop,it became "CB crazy"!
The 1970s Oz equivalent of your "cheerleader" may well have bought her CB radio from there,to join in the constant roar & heterodyne squealing on the AM calling channel.
This sounds a bit sexist,but she would be more likely to buy from Tandy's,Dick smith,or perhaps K-Mart,than any of the "hardcore" CB Stores the blokes frequented to increase their "street cred".
Consumer Products?
TV's,Broadcast radios,medium-fi audio systems were not really objects of "Nerd affection".
After all,they were sold in shops alongside Fridges,Washing machines,etc.
Waaayyy back,Audio HIFI was definitely a Nerd (might I say,Geek?) thing.
Guys that looked like Gyro Gearloose used to sidle up to the Electronics Parts counters & put down their
hard earned cash for such delights as 12AX7s,EL34As,Ultra-Linear output transformers & the like.
Getting back to "hardcore" Electronics,many of us from the slightly earlier generation considered Dick Smith & the like,a little "effete".
In Perth,we were brought up on the likes of Atkins (WA),Carlyle & Co,A.J Wyle,etc,where you went to the "Radio" counter &
waited to be served,like God intended!
Their Kits were great big things for making serious stuff like TVs & Amplifiers,
One of the next generation was "General Accessories" which was a self-service store,& had some kiddy kits but wasn't bad otherwise.
They had a big "lolly"(candy) jar of unmarked NPN transistors,& a bunch of "lolly" bags.
You could buy as many as you could fit in the bag for a dollar.
We jokingly knew them as "BC10-?"s as they could be used in most circuits where BC series small signal NPNs were specified.