Comfort Soles used to sell just 8 types of bedroom slippers…

Comfort Soles used to sell just 8 types of bedroom slippers and cornered the market for years. A year ago the company decided to add 10 new styles, and since many of them are similar to the original slipper styles, sales on the existing brands have declined. In other words, sales of the new slippers have________Blank the existing brands.