Is this fair? I mean, i'm not saying PE didn't accelerate demise or something but this business model is so doomed it doesn't seem fair to blame PE
The entire original "retailpocalypse" was an orgy of PE in retail. If you wanted to know which retailers were going to survive all you had to do is look at the ownership.
It's no more an obsolete business model than something like a Bass Pro Shop. It's just a different hobby.