FWIW....I live on a tight budget made doable by cutting corners with careful non-wasteful shopping. Family Dollar and most of the others are nowhere near as good for quality + price on basic items as is Dollar General. It would be nice to know how many of these closing Family Dollar stores compete with a nearby Dollar General.
I think you'll find that Dollar Tree is on par with Dollar General. Family Dollar is the pits. The dollar stores have replaced the five and dimes that used to be everywhere. I think they fill a huge niche that was left vacant when Woolworth's shut down its entire chain of money-losing five and dimes and renamed itself Foot Locker.