Lake has grown online styling service Stitch Fix into a force in the retail world. Customers of the subscription service receive regular “fixes,” or boxes of clothes it curates using a mix of data analytics and human artistry; patrons can either purchase them or send them back. Outside revenue ­estimates for 2015 hover around $250 million, with reportedly less than $50 million in outside funding. This year Stitch Fix hired over 2,000 people and expanded into menswear and women’s footwear. Look for a plus-size offering in 2017. Most admires: Reed Hastings.