Beyoncé's Ivy Park never was successful. From it's early days as a co-enterprise with TopShop, it was never profitable and was doomed to failure for its dated marketing, peculiar place of sale and off-brand product. They finally decided to part ways with Adidas, but this doesn't mean it is the end for the brand. They've lived through failure before, so they could come back. It's just with such a public downfall, its unlikely they will.