Forever 21, JCPenney, Brooks Brothers, etc.: isn’t propping up troubled brands a bad long-term move?

Simon Properties bought interests in a bunch of distressed chains: JCPenney, Forever 21, Brooks Brothers, etc., apparently to keep stores in its malls.

If Simon plans to keep those stores in its malls, isn't that a bad move over the long run? Wouldn't it be better to phase out those stores from malls over time and bring in stronger tenants?

Propping up deadbeat customers isn't a good idea for any business.