The mid-borough Sears store closed in 2014. However, we still have The Bay Plaza Shopping Center, which has a mall inside of it.
Built only 25 years ago, the larger center, together with the mall, contains Macy's, JCPenney, Staples, Kmart, Saks Off 5th, Old Navy, a multiplex movie theater, several restaurants, a fitness club, many small stores, and some office space. (For some reason, Barnes & Noble couldn't hang, and was replaced about 4-5 years ago.)
Although located in the Bronx, the mall component (which opened the same year Sears closed) is strategically situated at Hutchinson River Parkway and I-95, so it serves suburban customers in addition to locals.
Apparently, the shopping center plus mall is quite successful.
I fully accept the notion that online shopping will tend to dominate in the foreseeable future. But I also believe many people will choose to shop in person where the circumstances are right.