I'd think of dollar stores more like Queen Anne's lace - a hardy but not very worthy weed that quickly recolonizes disturbed regions, replacing but not reconstituting the diverse ecosystems that previously existed there, and easily outcompeting any attempt those plants might make to reestablish themselves.

Granted, Queen Anne's lace is a good source of nutrition for bees and wasps - a trait which dollar stores sadly do not emulate, cf. https://www.cbsnews.com/news/dollar-stores-and-food-deserts-...

So I have to say that, in my estimation at least, the plant comes out ahead. But even so, it's a mistake to confuse a thriving mass of Queen Anne's lace with a thriving ecology.