Brooklinen, a startup that sells bedding and other home goods online, has raised $50 million in new funding from growth equity firm Summit Partners. Recent headlines are spurring bigger questions about the direct-to-consumer retail business, with Blue Apron exploring a potential sale and Casper also disclosing disappointing growth and persistent losses. Co-founder and CEO Rich Fulop said his company is “a little bit different.” It’s a crucial difference, though: Brooklinen is profitable. In fact, Fulop said that the startup has been profitable for three of the last five years.