It's a shame that Kwik Save are in this position, as you rightly mention they were forerunners to the likes of Aldi, Netto and Lidl, and used to provide a much needed choice of "no frills" alternative for the basic products, in competition to the mainstream supermarket giants, which many lower income families needed, to help their struggling weekly budget.
The problem with another smaller chain like Kwik Save failing, is it strengthens a little further the giants monopoly share in the trade, therefore could possibly mean the day coming nearer, when the giant chains could flex their muscle and exercise their monopoly, by naming their own prices to consumers without fear of competition affecting them, therefore overall it is not in the general consumers better interests, for this to happen.
It would be nice to have seen new management stepping in who could have revived their flagging performance, before they got to this sad position of closures, as was the case in the successful revival of Marks and Spencer.