The more or less dead mall fairly near me--there is still a thriving grocery store and Home Depot in the surrounding complex but not part of the mall as such--had as anchor stores JC Penney, Macy's, and Sears. It's in a smaller city. That (and even more rural areas--surrounding the smaller city is a lot of farmland such as where I live). There's nothing there to support significant co-working space.

The luxury malls in cities that would support more co-working space--though ask WeWork how things are going--are mostly doing better.