Back in the early 70's there was nowhere in Australia to buy components and stuff except for some TV repair places, and electrical distributors, but no stock to browse. I bought a lot of stuff from the UK via mail order.
Dick Smith was a ham, and saw a need for components/radio supplierrs so started Dick Smith Electronics in mid 1970's? They would make kit designs in conjunction with Electronics Australia magazine.
Later on Jaycar started selling retail , and also Altronics , both of these also sell to professionals, and both are a bit like Radio Shack. We also had Tandy over here that were basically RadioShack franchises, it was good in the late 80's, but has faded back now to toys and phones. Altronics and Jaycar are still going strong.
Tandy and Dick Smith peaked around 2000 due to the massive boom in PC's and peripheral, however neither was anything like ComputerCity, and pimply faced kids don't sell computers real well!
Dick Smith sold out to Woolworths (a supermarket chain) in 2000? more recently some capital investment group bought it out, pumped it up and floated it on the ASX and scampered off with a huge profit. Then due to a whole pile of dodgy accounting practices and mismanagement DSE fell flat on its face just before Christmas last year, and wasn't honouring gift vouchers bought even days before! The stock was sold at a fire sale, and I think it is pretty much gone forever. DSE's undoing was attributed to buying stock with the highest supplier voucher value, rather than buying stock they could actually sell. E.g. they would buy $100k of stock from a particular supplier because these "garden gnomes" came with $40k of vouchers. so on the books your cash is down $100k less the $40k vouchers = -$60k, while inventory is up $100k, so overall your financial report shows a profit of $40k, but in reality you have accumulated a warehouse full of stock this is going obsolete fairly quickly.