Shake Shack participates in the "market share" game.

In Eastern Standard Time 8:58 - restaurants are fiercely competing for consumers with low spending willingness, Shake Shack said that the company is increasing marketing efforts to make its hamburger products stand out. The company ramped up its digital media marketing efforts last year, while also promoting new discounts to its app users. CEO Rob Lynch said at a consumer conference on Monday that now chain stores are engaged in a "market share" battle, making promotions and targeted marketing increasingly important.