Malls are not what is killing these stores, online sales are taking a big bite out of traditional stores. Look at Macy's, closing stores, but investing more into online sales capabilities. Discount stores such as Wal-Mart have also taken a lot of customers out of stores like Sears and Penneys. i had the misfortune of having to go to a mall a few days before the recent Christmas, and found I had no real difficulty parking or finding someone to pick up my order from, whereas 10 years ago, it would have had me pull my hair out.
My household is very much an online shopping household. We buy groceries and clothing at stores still, but almost everything else is delivered to our door.
True. One nearly dead mall near us - a victim of over-building and demographic change - was anchored by Sears, Macy's and JCP. I won't go chicken-egg on the situation, but I don't think S-JCP helped the mall the past couple of decades, and I don't think the mall helped the stores. Another mall near us is anchored by Target, Macy's, a multiplex theater w/food court, Old Navy, and Sears. Only the Sears is dying. A third mall is anchored by Macy's, Old Navy, and Nordstrom. The latter two malls are doing well.
I don't think department stores are killing malls nor the reverse. Retail is tough, generally, with online complicating the picture. Ward, Sears, Kmart, and JCP lost their way, and never found it again. Macy's had a close call, but I think they've recovered.