Even things like fast food or Walmart are a testament to the abundance the US has

Supermarkets are pretty American, but that's not true for the same reason it might have been in Yeltsin's day. I think you'd have trouble making a serious argument that communities with Tesco are fundamentally poorer or worse off than those with Walmart.

American megastores with 60,000+ SKUs are just a cultural preference in North America, and not even a universal one at that. Costco is very successful both domestically and internationally by rejecting that model. Trader joes (Aldi) is extremely competitive in the US despite a blatantly European business model. Americans are far more excited for either one of those to move in than a Walmart.