I find this comment quite bizarre. Have you ever actually tried an Aldi or Lidl?
> Aldi and its slightly-nicer copycats siphon away marketshare from normal stores who actually carry name-brand food and home goods you'd want to buy again
Huh? By name brand food I presume you mean well known with a marketing budget. It's rarely better or if it's from Kraft Mondolez ever worth wanting to buy again. What Aldi achieved though, was allowing me to stop thinking some own-label wasn't even worth trying. They could be markedly and consistently as good or better than brand names with marketing budget. Sure, there's things they can't do well (tea for instance), but unlike the big 4, own label is often best of the lot rather than second rate but cheap.
No need to spend 40-100% extra to fund Kellogs, Nestle, Pepsis, Mondolez's marketing. Those are the names I've often come to trust least after a dozen recipe changes to cheaper ingredients sold for same price, buyouts and general lack of care when it's just one logo in the portfolio of 200.
Offers baiting at Asda (Walmart) or Tesco's etc is far more cynical with end of shelf bad offers put there for placement $$$. They just usually throw out weird, branded, terrible value and expensive as "offer". The "limited best offer" that turns out to be 1.3% off regular price. Aldi middle aisle stuff is usually surprisingly good, for remarkably little, and no end of shelf bullshit.
Price, or penny pinching (nice loaded term btw) is not why we now shop there weekly. Nope, that's because they are better than the alternatives and often than the brands.
So tell me what's the appeal of a "normal" store that carries brands, when many of those brands are worse? When half the brands have been sold on so many times that they're now just a meaningless marketing label. I really don't see it any more.