True. A good example being Sears, which should have become Amazon but didn't. Prior to the arrival of Wal-Mart, if you couldn't find something locally (which, again, was true more often than not) your options were to drive 50-150 miles to the nearest large city, or order from the local Sears catalog merchant.
The latter wasn't what most people think of as a Sears store, because the local economy could never have supported such a thing. It was more like a small office with a counter and a stockroom behind it. They didn't keep any inventory, but could order products for pickup in about a week. Pickup, mind you. You still had to drive to town to get your order. As stupid as this sounds, it was 10x worse in person.
So if Wal-Mart didn't exist, it would have had to be invented. It was not (just) a monster that victimized smaller merchants and suppliers, a tax scam, or a plot to exploit the welfare system. It was something that needed to happen, a large gap in the market that eventually got filled.
Nowadays I wouldn't set foot in one, but it was different at the time. I didn't mean to write a long essay stanning for Wal-Mart, but your original post is a bit of a pet peeve.
Yeah, and because of those 2 words, especially "convenience", we're going to burn the planet down.
Also, did you read my original comment and miss the part about Walmart and co being predatory businesses? That's why they can keep those prices so low, because they're socializing their costs to everyone else.