Amazon's proposed buyout of Whole Foods threatens many brick and mortar and digital grocers alike. But a few are carving out a niche for themselves in this competitive space. Thrive Market is an online-membership based retailer offering natural and organic products at a discount. Yahoo Finance's Dan Roberts sits down with Thrive Market's CEO, Gunnar Lovelace, to get his take on the Amazon-Whole Foods deal as well as trends in the food space.