Greyfields are getting bigger every year, or Who Remembers Zayre's

So I note this story by Jon Delano:Pittsburgh Mills' Future Could Be In Doubt. The full timeline of the Pittsburgh Mills project is included in Mike Yeoman's: Pittsburgh Mills muscles its way into landscape.

Brings to mind: Allegheny Center Mall. Which remarkably is not included here: http://www.deadmalls.com/

but overall it makes you think, how many development projects are driven more by inertia than anything else.