Experts say it comes as no surprise that Washington State grocery chain Haggen filed for bankruptcy and that other grocery chains have been forced to consolidate or close. That’s because Southern California is the largest grocery market in the United States, and one of the most competitive, the Los Angeles Times reports. That might be bad news for Haggen, but the fierce competition has led to more choices for consumers and puts more pressure on stores to offer the right prices and services to remain on top.