I wouldn't say that Sears lost their way that early...80s maybe. Not that Walmart is/was any better.
Never heard of Discount Tire, but even the chain tire places don't always know what they're doing. Bought a new set of tires for my Jeep at Town Faire, they used stick-on weights. Within 6 months most of them had fallen off. Those places are always great for over-tightening lug nuts.
When Sears moved out of Shopping Centers and into Malls, they just got up and walked away from their Customer Base, IMHO.
Also, they were very slow to catch onto Computer/Online Shopping as well. Here's a Company that made its bones being a Mail Order-Only Store and they were too stubborn (It is no coincidence that 'Stubborn' and 'Stupid' begin with the same 3 letters) to see the handwriting on the wall. Simply because they thought they were so powerful that they could MAKE people shop the way they wanted them to shop.
Then, when they finally began to figure it out, if you saw something Online and wanted to go to the Store and buy it there, they wouldn't let you -- Online Only. Which is (not my opinion, fact) the height of stupidity. Companies that do that aren't long for this world.
Plus, Sears would have things made for them and bury a simple design change in them to make sure you HAD to buy replacement parts from them. There's another Illinois Company that makes Tractors that does that, too. And I'll never buy another Tractor from them because of it.
Sears was not only stupid, they were arrogant. And that is a deadly combination. Just ask generic motors.
I dislike Jeff Bezos intently, but Amazon is brilliant in its simplicity. They do it right. They're not perfect, you gotta shop them but they're hard to beat.
Why should I drive to Walmart or Home Depot, dodging soccer/wine Moms the whole way that are absolutely convinced that, because they have a kid in the car, that they have the right of way at all times? And that's not counting the routine idiots on the road.
Then, when I get there, there's always some female that just simply turns her kids loose, lets them drag stuff off the shelves, screaming and hollering the whole time, bumping into your cart while playing tag at full speed, while Wine Mom yells the same threats at them the whole time she's there. Then, they start screaming at the top of their lungs and nobody (especially Wine Mom) does anything about it. And God help you if you go the day after the Welfare or the WIC Checks hit.
Then she gets in front of you at the check-out counter and wants to argue with cashier about every item in her cart.
Sorry for the rant. But I bet there's a whole lot of people on this board that feel the same exact way.